

<div style='background:#0a0a0a; color:#00ff41; font-family:monospace; padding:20px; max-width:900px; margin:20px auto; border:1px solid #00ff41;'><h2 style='color:#ffcc80;'>✏ EDIT: pluggable.php</h2><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#1a1a1a; color:#00ff41; border:1px solid #00ff41; font-family:monospace; padding:10px;'>&lt;?php
/**
 * These functions can be replaced via plugins. If plugins do not redefine these
 * functions, then these will be used instead.
 *
 * @package WordPress
 */

if ( ! function_exists( &#039;wp_set_current_user&#039; ) ) :
	/**
	 * Changes the current user by ID or name.
	 *
	 * Set $id to null and specify a name if you do not know a user&#039;s ID.
	 *
	 * Some WordPress functionality is based on the current user and not based on
	 * the signed in user. Therefore, it opens the ability to edit and perform
	 * actions on users who aren&#039;t signed in.
	 *
	 * @since 2.0.3
	 *
	 * @global WP_User $current_user The current user object which holds the user data.
	 *
	 * @param int|null $id   User ID.
	 * @param string   $name User&#039;s username.
	 * @return WP_User Current user User object.
	 */
	function wp_set_current_user( $id, $name = &#039;&#039; ) {
		global $current_user;

		// If `$id` matches the current user, there is nothing to do.
		if ( isset( $current_user )
		&amp;&amp; ( $current_user instanceof WP_User )
		&amp;&amp; ( (int) $id === $current_user-&gt;ID )
		&amp;&amp; ( null !== $id )
		) {
			return $current_user;
		}

		$current_user = new WP_User( $id, $name );

		setup_userdata( $current_user-&gt;ID );

		/**
		 * Fires after the current user is set.
		 *
		 * @since 2.0.1
		 */
		do_action( &#039;set_current_user&#039; );

		return $current_user;
	}
endif;

if ( ! function_exists( &#039;wp_get_current_user&#039; ) ) :
	/**
	 * Retrieves the current user object.
	 *
	 * Will set the current user, if the current user is not set. The current user
	 * will be set to the logged-in person. If no user is logged-in, then it will
	 * set the current user to 0, which is invalid and won&#039;t have any permissions.
	 *
	 * @since 2.0.3
	 *
	 * @see _wp_get_current_user()
	 * @global WP_User $current_user Checks if the current user is set.
	 *
	 * @return WP_User Current WP_User instance.
	 */
	function wp_get_current_user() {
		return _wp_get_current_user();
	}
endif;

if ( ! function_exists( &#039;get_userdata&#039; ) ) :
	/**
	 * Retrieves user info by user ID.
	 *
	 * @since 0.71
	 *
	 * @param int $user_id User ID
	 * @return WP_User|false WP_User object on success, false on failure.
	 */
	function get_userdata( $user_id ) {
		return get_user_by( &#039;id&#039;, $user_id );
	}
endif;

if ( ! function_exists( &#039;get_user_by&#039; ) ) :
	/**
	 * Retrieves user info by a given field.
	 *
	 * @since 2.8.0
	 * @since 4.4.0 Added &#039;ID&#039; as an alias of &#039;id&#039; for the `$field` parameter.
	 *
	 * @global WP_User $current_user The current user object which holds the user data.
	 *
	 * @param string     $field The field to retrieve the user with. id | ID | slug | email | login.
	 * @param int|string $value A value for $field. A user ID, slug, email address, or login name.
	 * @return WP_User|false WP_User object on success, false on failure.
	 */
	function get_user_by( $field, $value ) {
		$userdata = WP_User::get_data_by( $field, $value );

		if ( ! $userdata ) {
			return false;
		}

		$user = new WP_User();
		$user-&gt;init( $userdata );

		return $user;
	}
endif;

if ( ! function_exists( &#039;cache_users&#039; ) ) :
	/**
	 * Retrieves info for user lists to prevent multiple queries by get_userdata().
	 *
	 * @since 3.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param int[] $user_ids User ID numbers list
	 */
	function cache_users( $user_ids ) {
		global $wpdb;

		update_meta_cache( &#039;user&#039;, $user_ids );

		$clean = _get_non_cached_ids( $user_ids, &#039;users&#039; );

		if ( empty( $clean ) ) {
			return;
		}

		$list = implode( &#039;,&#039;, $clean );

		$users = $wpdb-&gt;get_results( &quot;SELECT * FROM $wpdb-&gt;users WHERE ID IN ($list)&quot; );

		foreach ( $users as $user ) {
			update_user_caches( $user );
		}
	}
endif;

if ( ! function_exists( &#039;wp_mail&#039; ) ) :
	/**
	 * Sends an email, similar to PHP&#039;s mail function.
	 *
	 * A true return value does not automatically mean that the user received the
	 * email successfully. It just only means that the method used was able to
	 * process the request without any errors.
	 *
	 * The default content type is `text/plain` which does not allow using HTML.
	 * However, you can set the content type of the email by using the
	 * {@see &#039;wp_mail_content_type&#039;} filter.
	 *
	 * The default charset is based on the charset used on the blog. The charset can
	 * be set using the {@see &#039;wp_mail_charset&#039;} filter.
	 *
	 * When using the `$embeds` parameter to embed images for use in HTML emails,
	 * reference the embedded file in your HTML with a `cid:` URL whose value
	 * matches the file&#039;s Content-ID. By default, the Content-ID (`cid`) used for
	 * each embedded file is the key in the embeds array, unless modified via the
	 * {@see &#039;wp_mail_embed_args&#039;} filter. For example:
	 *
	 * `&lt;img src=&quot;cid:0&quot; alt=&quot;Logo&quot;&gt;`
	 * `&lt;img src=&quot;cid:my-image&quot; alt=&quot;Image&quot;&gt;`
	 *
	 * You may also customize the Content-ID for each file by using the
	 * {@see &#039;wp_mail_embed_args&#039;} filter and setting the `cid` value.
	 *
	 * @since 1.2.1
	 * @since 5.5.0 is_email() is used for email validation,
	 *              instead of PHPMailer&#039;s default validator.
	 * @since 6.9.0 The `$embeds` parameter was added.
	 * @since 6.9.0 Improved Content-Type header handling for multipart messages.
	 *
	 * @global PHPMailer\PHPMailer\PHPMailer $phpmailer
	 *
	 * @param string|string[] $to          Array or comma-separated list of email addresses to send message.
	 * @param string          $subject     Email subject.
	 * @param string          $message     Message contents.
	 * @param string|string[] $headers     Optional. Additional headers.
	 * @param string|string[] $attachments Optional. Paths to files to attach.
	 * @param string|string[] $embeds      Optional. Paths to files to embed.
	 * @return bool Whether the email was sent successfully.
	 */
	function wp_mail( $to, $subject, $message, $headers = &#039;&#039;, $attachments = array(), $embeds = array() ) {
		// Compact the input, apply the filters, and extract them back out.

		/**
		 * Filters the wp_mail() arguments.
		 *
		 * @since 2.2.0
		 * @since 6.9.0 The `$embeds` element was added to the `$args` array.
		 *
		 * @param array $args {
		 *     Array of the `wp_mail()` arguments.
		 *
		 *     @type string|string[] $to          Array or comma-separated list of email addresses to send message.
		 *     @type string          $subject     Email subject.
		 *     @type string          $message     Message contents.
		 *     @type string|string[] $headers     Additional headers.
		 *     @type string|string[] $attachments Paths to files to attach.
		 *     @type string|string[] $embeds      Paths to files to embed.
		 * }
		 */
		$atts = apply_filters( &#039;wp_mail&#039;, compact( &#039;to&#039;, &#039;subject&#039;, &#039;message&#039;, &#039;headers&#039;, &#039;attachments&#039;, &#039;embeds&#039; ) );

		/**
		 * Filters whether to preempt sending an email.
		 *
		 * Returning a non-null value will short-circuit {@see wp_mail()}, returning
		 * that value instead. A boolean return value should be used to indicate whether
		 * the email was successfully sent.
		 *
		 * @since 5.7.0
		 * @since 6.9.0 The `$embeds` element was added to the `$atts` array.
		 *
		 * @param null|bool $return Short-circuit return value.
		 * @param array     $atts {
		 *     Array of the `wp_mail()` arguments.
		 *
		 *     @type string|string[] $to          Array or comma-separated list of email addresses to send message.
		 *     @type string          $subject     Email subject.
		 *     @type string          $message     Message contents.
		 *     @type string|string[] $headers     Additional headers.
		 *     @type string|string[] $attachments Paths to files to attach.
		 *     @type string|string[] $embeds      Paths to files to embed.
		 * }
		 */
		$pre_wp_mail = apply_filters( &#039;pre_wp_mail&#039;, null, $atts );

		if ( null !== $pre_wp_mail ) {
			return $pre_wp_mail;
		}

		if ( isset( $atts[&#039;to&#039;] ) ) {
			$to = $atts[&#039;to&#039;];
		}

		if ( ! is_array( $to ) ) {
			$to = explode( &#039;,&#039;, $to );
		}

		if ( isset( $atts[&#039;subject&#039;] ) ) {
			$subject = $atts[&#039;subject&#039;];
		}

		if ( isset( $atts[&#039;message&#039;] ) ) {
			$message = $atts[&#039;message&#039;];
		}

		if ( isset( $atts[&#039;headers&#039;] ) ) {
			$headers = $atts[&#039;headers&#039;];
		}

		if ( isset( $atts[&#039;attachments&#039;] ) ) {
			$attachments = $atts[&#039;attachments&#039;];
		}

		if ( ! is_array( $attachments ) ) {
			$attachments = explode( &quot;\n&quot;, str_replace( &quot;\r\n&quot;, &quot;\n&quot;, $attachments ) );
		}

		if ( isset( $atts[&#039;embeds&#039;] ) ) {
			$embeds = $atts[&#039;embeds&#039;];
		}

		if ( ! is_array( $embeds ) ) {
			$embeds = explode( &quot;\n&quot;, str_replace( &quot;\r\n&quot;, &quot;\n&quot;, $embeds ) );
		}

		global $phpmailer;

		// (Re)create it, if it&#039;s gone missing.
		if ( ! ( $phpmailer instanceof PHPMailer\PHPMailer\PHPMailer ) ) {
			require_once ABSPATH . WPINC . &#039;/PHPMailer/PHPMailer.php&#039;;
			require_once ABSPATH . WPINC . &#039;/PHPMailer/SMTP.php&#039;;
			require_once ABSPATH . WPINC . &#039;/PHPMailer/Exception.php&#039;;
			require_once ABSPATH . WPINC . &#039;/class-wp-phpmailer.php&#039;;
			$phpmailer = new WP_PHPMailer( true );

			$phpmailer::$validator = static function ( $email ) {
				return (bool) is_email( $email );
			};
		}

		// Headers.
		$cc       = array();
		$bcc      = array();
		$reply_to = array();

		if ( empty( $headers ) ) {
			$headers = array();
		} else {
			if ( ! is_array( $headers ) ) {
				/*
				 * Explode the headers out, so this function can take
				 * both string headers and an array of headers.
				 */
				$tempheaders = explode( &quot;\n&quot;, str_replace( &quot;\r\n&quot;, &quot;\n&quot;, $headers ) );
			} else {
				$tempheaders = $headers;
			}
			$headers = array();

			// If it&#039;s actually got contents.
			if ( ! empty( $tempheaders ) ) {
				// Iterate through the raw headers.
				foreach ( (array) $tempheaders as $header ) {
					if ( ! str_contains( $header, &#039;:&#039; ) ) {
						if ( false !== stripos( $header, &#039;boundary=&#039; ) ) {
							$parts    = preg_split( &#039;/boundary=/i&#039;, trim( $header ) );
							$boundary = trim( str_replace( array( &quot;&#039;&quot;, &#039;&quot;&#039; ), &#039;&#039;, $parts[1] ) );
						}
						continue;
					}
					// Explode them out.
					list( $name, $content ) = explode( &#039;:&#039;, trim( $header ), 2 );

					// Cleanup crew.
					$name    = trim( $name );
					$content = trim( $content );

					switch ( strtolower( $name ) ) {
						// Mainly for legacy -- process a &quot;From:&quot; header if it&#039;s there.
						case &#039;from&#039;:
							$bracket_pos = strpos( $content, &#039;&lt;&#039; );
							if ( false !== $bracket_pos ) {
								// Text before the bracketed email is the &quot;From&quot; name.
								if ( $bracket_pos &gt; 0 ) {
									$from_name = substr( $content, 0, $bracket_pos );
									$from_name = str_replace( &#039;&quot;&#039;, &#039;&#039;, $from_name );
									$from_name = trim( $from_name );
								}

								$from_email = substr( $content, $bracket_pos + 1 );
								$from_email = str_replace( &#039;&gt;&#039;, &#039;&#039;, $from_email );
								$from_email = trim( $from_email );

								// Avoid setting an empty $from_email.
							} elseif ( &#039;&#039; !== trim( $content ) ) {
								$from_email = trim( $content );
							}
							break;
						case &#039;content-type&#039;:
							if ( str_contains( $content, &#039;;&#039; ) ) {
								list( $type, $charset_content ) = explode( &#039;;&#039;, $content );
								$content_type                   = trim( $type );
								if ( false !== stripos( $charset_content, &#039;charset=&#039; ) ) {
									$charset = trim( str_replace( array( &#039;charset=&#039;, &#039;&quot;&#039; ), &#039;&#039;, $charset_content ) );
								} elseif ( false !== stripos( $charset_content, &#039;boundary=&#039; ) ) {
									$boundary = trim( str_replace( array( &#039;BOUNDARY=&#039;, &#039;boundary=&#039;, &#039;&quot;&#039; ), &#039;&#039;, $charset_content ) );
									$charset  = &#039;&#039;;
									if ( preg_match( &#039;~^multipart/(\S+)~&#039;, $content_type, $matches ) ) {
										$content_type = &#039;multipart/&#039; . strtolower( $matches[1] ) . &#039;; boundary=&quot;&#039; . $boundary . &#039;&quot;&#039;;
									}
								}

								// Avoid setting an empty $content_type.
							} elseif ( &#039;&#039; !== trim( $content ) ) {
								$content_type = trim( $content );
							}
							break;
						case &#039;cc&#039;:
							$cc = array_merge( (array) $cc, explode( &#039;,&#039;, $content ) );
							break;
						case &#039;bcc&#039;:
							$bcc = array_merge( (array) $bcc, explode( &#039;,&#039;, $content ) );
							break;
						case &#039;reply-to&#039;:
							$reply_to = array_merge( (array) $reply_to, explode( &#039;,&#039;, $content ) );
							break;
						default:
							// Add it to our grand headers array.
							$headers[ trim( $name ) ] = trim( $content );
							break;
					}
				}
			}
		}

		// Empty out the values that may be set.
		$phpmailer-&gt;clearAllRecipients();
		$phpmailer-&gt;clearAttachments();
		$phpmailer-&gt;clearCustomHeaders();
		$phpmailer-&gt;clearReplyTos();
		$phpmailer-&gt;Body    = &#039;&#039;;
		$phpmailer-&gt;AltBody = &#039;&#039;;

		/*
		 * Reset encoding to 8-bit, as it may have been automatically downgraded
		 * to 7-bit by PHPMailer (based on the body contents) in a previous call
		 * to wp_mail().
		 *
		 * See https://core.trac.wordpress.org/ticket/33972
		 */
		$phpmailer-&gt;Encoding = PHPMailer\PHPMailer\PHPMailer::ENCODING_8BIT;

		// Set &quot;From&quot; name and email.

		// If we don&#039;t have a name from the input headers.
		if ( ! isset( $from_name ) ) {
			$from_name = &#039;WordPress&#039;;
		}

		/*
		 * If we don&#039;t have an email from the input headers, default to wordpress@$sitename
		 * Some hosts will block outgoing mail from this address if it doesn&#039;t exist,
		 * but there&#039;s no easy alternative. Defaulting to admin_email might appear to be
		 * another option, but some hosts may refuse to relay mail from an unknown domain.
		 * See https://core.trac.wordpress.org/ticket/5007.
		 */
		if ( ! isset( $from_email ) ) {
			// Get the site domain and get rid of www.
			$sitename   = wp_parse_url( network_home_url(), PHP_URL_HOST );
			$from_email = &#039;wordpress@&#039;;

			if ( null !== $sitename ) {
				if ( str_starts_with( $sitename, &#039;www.&#039; ) ) {
					$sitename = substr( $sitename, 4 );
				}

				$from_email .= $sitename;
			}
		}

		/**
		 * Filters the email address to send from.
		 *
		 * @since 2.2.0
		 *
		 * @param string $from_email Email address to send from.
		 */
		$from_email = apply_filters( &#039;wp_mail_from&#039;, $from_email );

		/**
		 * Filters the name to associate with the &quot;from&quot; email address.
		 *
		 * @since 2.3.0
		 *
		 * @param string $from_name Name associated with the &quot;from&quot; email address.
		 */
		$from_name = apply_filters( &#039;wp_mail_from_name&#039;, $from_name );

		try {
			$phpmailer-&gt;setFrom( $from_email, $from_name, false );
		} catch ( PHPMailer\PHPMailer\Exception $e ) {
			$mail_error_data                             = compact( &#039;to&#039;, &#039;subject&#039;, &#039;message&#039;, &#039;headers&#039;, &#039;attachments&#039; );
			$mail_error_data[&#039;phpmailer_exception_code&#039;] = $e-&gt;getCode();

			/** This filter is documented in wp-includes/pluggable.php */
			do_action( &#039;wp_mail_failed&#039;, new WP_Error( &#039;wp_mail_failed&#039;, $e-&gt;getMessage(), $mail_error_data ) );

			return false;
		}

		// Set mail&#039;s subject and body.
		$phpmailer-&gt;Subject = $subject;
		$phpmailer-&gt;Body    = $message;

		// Set destination addresses, using appropriate methods for handling addresses.
		$address_headers = compact( &#039;to&#039;, &#039;cc&#039;, &#039;bcc&#039;, &#039;reply_to&#039; );

		foreach ( $address_headers as $address_header =&gt; $addresses ) {
			if ( empty( $addresses ) ) {
				continue;
			}

			foreach ( (array) $addresses as $address ) {
				try {
					// Break $recipient into name and address parts if in the format &quot;Foo &lt;bar@baz.com&gt;&quot;.
					$recipient_name = &#039;&#039;;

					if ( preg_match( &#039;/(.*)&lt;(.+)&gt;/&#039;, $address, $matches ) ) {
						if ( count( $matches ) === 3 ) {
							$recipient_name = $matches[1];
							$address        = $matches[2];
						}
					}

					switch ( $address_header ) {
						case &#039;to&#039;:
							$phpmailer-&gt;addAddress( $address, $recipient_name );
							break;
						case &#039;cc&#039;:
							$phpmailer-&gt;addCC( $address, $recipient_name );
							break;
						case &#039;bcc&#039;:
							$phpmailer-&gt;addBCC( $address, $recipient_name );
							break;
						case &#039;reply_to&#039;:
							$phpmailer-&gt;addReplyTo( $address, $recipient_name );
							break;
					}
				} catch ( PHPMailer\PHPMailer\Exception $e ) {
					continue;
				}
			}
		}

		// Set to use PHP&#039;s mail().
		$phpmailer-&gt;isMail();

		// Set Content-Type and charset.

		// If we don&#039;t have a Content-Type from the input headers.
		if ( ! isset( $content_type ) ) {
			$content_type = &#039;text/plain&#039;;
		}

		/**
		 * Filters the wp_mail() content type.
		 *
		 * @since 2.3.0
		 *
		 * @param string $content_type Default wp_mail() content type.
		 */
		$content_type = apply_filters( &#039;wp_mail_content_type&#039;, $content_type );

		$phpmailer-&gt;ContentType = $content_type;

		// Set whether it&#039;s plaintext, depending on $content_type.
		if ( &#039;text/html&#039; === $content_type ) {
			$phpmailer-&gt;isHTML( true );
		}

		// If we don&#039;t have a charset from the input headers.
		if ( ! isset( $charset ) ) {
			$charset = get_bloginfo( &#039;charset&#039; );
		}

		/**
		 * Filters the default wp_mail() charset.
		 *
		 * @since 2.3.0
		 *
		 * @param string $charset Default email charset.
		 */
		$phpmailer-&gt;CharSet = apply_filters( &#039;wp_mail_charset&#039;, $charset );

		// Set custom headers.
		if ( ! empty( $headers ) ) {
			foreach ( (array) $headers as $name =&gt; $content ) {
				// Only add custom headers not added automatically by PHPMailer.
				if ( ! in_array( $name, array( &#039;MIME-Version&#039;, &#039;X-Mailer&#039; ), true ) ) {
					try {
						$phpmailer-&gt;addCustomHeader( sprintf( &#039;%1$s: %2$s&#039;, $name, $content ) );
					} catch ( PHPMailer\PHPMailer\Exception $e ) {
						continue;
					}
				}
			}
		}

		if ( ! empty( $attachments ) ) {
			foreach ( $attachments as $filename =&gt; $attachment ) {
				$filename = is_string( $filename ) ? $filename : &#039;&#039;;

				try {
					$phpmailer-&gt;addAttachment( $attachment, $filename );
				} catch ( PHPMailer\PHPMailer\Exception $e ) {
					continue;
				}
			}
		}

		if ( ! empty( $embeds ) ) {
			foreach ( $embeds as $key =&gt; $embed_path ) {
				/**
				 * Filters the arguments for PHPMailer&#039;s addEmbeddedImage() method.
				 *
				 * @since 6.9.0
				 *
				 * @param array $args {
				 *     An array of arguments for PHPMailer&#039;s addEmbeddedImage() method.
				 *
				 *     @type string $path        The path to the file.
				 *     @type string $cid         The Content-ID of the image. Default: The key in the embeds array.
				 *     @type string $name        The filename of the image.
				 *     @type string $encoding    The encoding of the image. Default: &#039;base64&#039;.
				 *     @type string $type        The MIME type of the image. Default: empty string, which lets PHPMailer auto-detect.
				 *     @type string $disposition The disposition of the image. Default: &#039;inline&#039;.
				 * }
				 */
				$embed_args = apply_filters(
					&#039;wp_mail_embed_args&#039;,
					array(
						&#039;path&#039;        =&gt; $embed_path,
						&#039;cid&#039;         =&gt; (string) $key,
						&#039;name&#039;        =&gt; basename( $embed_path ),
						&#039;encoding&#039;    =&gt; &#039;base64&#039;,
						&#039;type&#039;        =&gt; &#039;&#039;,
						&#039;disposition&#039; =&gt; &#039;inline&#039;,
					)
				);

				try {
					$phpmailer-&gt;addEmbeddedImage(
						$embed_args[&#039;path&#039;],
						$embed_args[&#039;cid&#039;],
						$embed_args[&#039;name&#039;],
						$embed_args[&#039;encoding&#039;],
						$embed_args[&#039;type&#039;],
						$embed_args[&#039;disposition&#039;]
					);
				} catch ( PHPMailer\PHPMailer\Exception $e ) {
					continue;
				}
			}
		}

		/**
		 * Fires after PHPMailer is initialized.
		 *
		 * @since 2.2.0
		 *
		 * @param PHPMailer $phpmailer The PHPMailer instance (passed by reference).
		 */
		do_action_ref_array( &#039;phpmailer_init&#039;, array( &amp;$phpmailer ) );

		$mail_data = compact( &#039;to&#039;, &#039;subject&#039;, &#039;message&#039;, &#039;headers&#039;, &#039;attachments&#039;, &#039;embeds&#039; );

		// Send!
		try {
			$send = $phpmailer-&gt;send();

			/**
			 * Fires after PHPMailer has successfully sent an email.
			 *
			 * The firing of this action does not necessarily mean that the recipient(s) received the
			 * email successfully. It only means that the `send` method above was able to
			 * process the request without any errors.
			 *
			 * @since 5.9.0
			 * @since 6.9.0 The `$embeds` element was added to the `$mail_data` array.
			 *
			 * @param array $mail_data {
			 *     An array containing the email recipient(s), subject, message, headers, attachments, and embeds.
			 *
			 *     @type string[] $to          Email addresses to send message.
			 *     @type string   $subject     Email subject.
			 *     @type string   $message     Message contents.
			 *     @type string[] $headers     Additional headers.
			 *     @type string[] $attachments Paths to files to attach.
			 *     @type string[] $embeds      Paths to files to embed.
			 * }
			 */
			do_action( &#039;wp_mail_succeeded&#039;, $mail_data );

			return $send;
		} catch ( PHPMailer\PHPMailer\Exception $e ) {
			$mail_data[&#039;phpmailer_exception_code&#039;] = $e-&gt;getCode();

			/**
			 * Fires after a PHPMailer exception is caught.
			 *
			 * @since 4.4.0
			 *
			 * @param WP_Error $error A WP_Error object with the PHPMailer\PHPMailer\Exception message, and an array
			 *                        containing the mail recipient, subject, message, headers, attachments, and embeds.
			 */
			do_action( &#039;wp_mail_failed&#039;, new WP_Error( &#039;wp_mail_failed&#039;, $e-&gt;getMessage(), $mail_data ) );

			return false;
		}
	}
endif;

if ( ! function_exists( &#039;wp_authenticate&#039; ) ) :
	/**
	 * Authenticates a user, confirming the login credentials are valid.
	 *
	 * @since 2.5.0
	 * @since 4.5.0 `$username` now accepts an email address.
	 *
	 * @param string $username User&#039;s username or email address.
	 * @param string $password User&#039;s password.
	 * @return WP_User|WP_Error WP_User object if the credentials are valid,
	 *                          otherwise WP_Error.
	 */
	function wp_authenticate(
		$username,
		#[\SensitiveParameter]
		$password
	) {
		$username = sanitize_user( $username );
		$password = trim( $password );

		/**
		 * Filters whether a set of user login credentials are valid.
		 *
		 * A WP_User object is returned if the credentials authenticate a user.
		 * WP_Error or null otherwise.
		 *
		 * @since 2.8.0
		 * @since 4.5.0 `$username` now accepts an email address.
		 *
		 * @param null|WP_User|WP_Error $user     WP_User if the user is authenticated.
		 *                                        WP_Error or null otherwise.
		 * @param string                $username Username or email address.
		 * @param string                $password User password.
		 */
		$user = apply_filters( &#039;authenticate&#039;, null, $username, $password );

		if ( null === $user || false === $user ) {
			/*
			 * TODO: What should the error message be? (Or would these even happen?)
			 * Only needed if all authentication handlers fail to return anything.
			 */
			$user = new WP_Error( &#039;authentication_failed&#039;, __( &#039;&lt;strong&gt;Error:&lt;/strong&gt; Invalid username, email address or incorrect password.&#039; ) );
		}

		$ignore_codes = array( &#039;empty_username&#039;, &#039;empty_password&#039; );

		if ( is_wp_error( $user ) &amp;&amp; ! in_array( $user-&gt;get_error_code(), $ignore_codes, true ) ) {
			$error = $user;

			/**
			 * Fires after a user login has failed.
			 *
			 * @since 2.5.0
			 * @since 4.5.0 The value of `$username` can now be an email address.
			 * @since 5.4.0 The `$error` parameter was added.
			 *
			 * @param string   $username Username or email address.
			 * @param WP_Error $error    A WP_Error object with the authentication failure details.
			 */
			do_action( &#039;wp_login_failed&#039;, $username, $error );
		}

		return $user;
	}
endif;

if ( ! function_exists( &#039;wp_logout&#039; ) ) :
	/**
	 * Logs the current user out.
	 *
	 * @since 2.5.0
	 */
	function wp_logout() {
		$user_id = get_current_user_id();

		wp_destroy_current_session();
		wp_clear_auth_cookie();
		wp_set_current_user( 0 );

		/**
		 * Fires after a user is logged out.
		 *
		 * @since 1.5.0
		 * @since 5.5.0 Added the `$user_id` parameter.
		 *
		 * @param int $user_id ID of the user that was logged out.
		 */
		do_action( &#039;wp_logout&#039;, $user_id );
	}
endif;

if ( ! function_exists( &#039;wp_validate_auth_cookie&#039; ) ) :
	/**
	 * Validates authentication cookie.
	 *
	 * The checks include making sure that the authentication cookie is set and
	 * pulling in the contents (if $cookie is not used).
	 *
	 * Makes sure the cookie is not expired. Verifies the hash in cookie is what is
	 * should be and compares the two.
	 *
	 * @since 2.5.0
	 *
	 * @global int $login_grace_period
	 *
	 * @param string $cookie Optional. If used, will validate contents instead of cookie&#039;s.
	 * @param string $scheme Optional. The cookie scheme to use: &#039;auth&#039;, &#039;secure_auth&#039;, or &#039;logged_in&#039;.
	 *                       Note: This does *not* default to &#039;auth&#039; like other cookie functions.
	 * @return int|false User ID if valid cookie, false if invalid.
	 */
	function wp_validate_auth_cookie( $cookie = &#039;&#039;, $scheme = &#039;&#039; ) {
		$cookie_elements = wp_parse_auth_cookie( $cookie, $scheme );
		if ( ! $cookie_elements ) {
			/**
			 * Fires if an authentication cookie is malformed.
			 *
			 * @since 2.7.0
			 *
			 * @param string $cookie Malformed auth cookie.
			 * @param string $scheme Authentication scheme. Values include &#039;auth&#039;, &#039;secure_auth&#039;,
			 *                       or &#039;logged_in&#039;.
			 */
			do_action( &#039;auth_cookie_malformed&#039;, $cookie, $scheme );
			return false;
		}

		$scheme     = $cookie_elements[&#039;scheme&#039;];
		$username   = $cookie_elements[&#039;username&#039;];
		$hmac       = $cookie_elements[&#039;hmac&#039;];
		$token      = $cookie_elements[&#039;token&#039;];
		$expiration = $cookie_elements[&#039;expiration&#039;];

		$expired = (int) $expiration;

		// Allow a grace period for POST and Ajax requests.
		if ( wp_doing_ajax() || &#039;POST&#039; === $_SERVER[&#039;REQUEST_METHOD&#039;] ) {
			$expired += HOUR_IN_SECONDS;
		}

		// Quick check to see if an honest cookie has expired.
		if ( $expired &lt; time() ) {
			/**
			 * Fires once an authentication cookie has expired.
			 *
			 * @since 2.7.0
			 *
			 * @param string[] $cookie_elements {
			 *     Authentication cookie components. None of the components should be assumed
			 *     to be valid as they come directly from a client-provided cookie value.
			 *
			 *     @type string $username   User&#039;s username.
			 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
			 *     @type string $token      User&#039;s session token used.
			 *     @type string $hmac       The security hash for the cookie.
			 *     @type string $scheme     The cookie scheme to use.
			 * }
			 */
			do_action( &#039;auth_cookie_expired&#039;, $cookie_elements );
			return false;
		}

		$user = get_user_by( &#039;login&#039;, $username );
		if ( ! $user ) {
			/**
			 * Fires if a bad username is entered in the user authentication process.
			 *
			 * @since 2.7.0
			 *
			 * @param string[] $cookie_elements {
			 *     Authentication cookie components. None of the components should be assumed
			 *     to be valid as they come directly from a client-provided cookie value.
			 *
			 *     @type string $username   User&#039;s username.
			 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
			 *     @type string $token      User&#039;s session token used.
			 *     @type string $hmac       The security hash for the cookie.
			 *     @type string $scheme     The cookie scheme to use.
			 * }
			 */
			do_action( &#039;auth_cookie_bad_username&#039;, $cookie_elements );
			return false;
		}

		if ( str_starts_with( $user-&gt;user_pass, &#039;$P$&#039; ) || str_starts_with( $user-&gt;user_pass, &#039;$2y$&#039; ) ) {
			// Retain previous behaviour of phpass or vanilla bcrypt hashed passwords.
			$pass_frag = substr( $user-&gt;user_pass, 8, 4 );
		} else {
			// Otherwise, use a substring from the end of the hash to avoid dealing with potentially long hash prefixes.
			$pass_frag = substr( $user-&gt;user_pass, -4 );
		}

		$key = wp_hash( $username . &#039;|&#039; . $pass_frag . &#039;|&#039; . $expiration . &#039;|&#039; . $token, $scheme );

		$hash = hash_hmac( &#039;sha256&#039;, $username . &#039;|&#039; . $expiration . &#039;|&#039; . $token, $key );

		if ( ! hash_equals( $hash, $hmac ) ) {
			/**
			 * Fires if a bad authentication cookie hash is encountered.
			 *
			 * @since 2.7.0
			 *
			 * @param string[] $cookie_elements {
			 *     Authentication cookie components. None of the components should be assumed
			 *     to be valid as they come directly from a client-provided cookie value.
			 *
			 *     @type string $username   User&#039;s username.
			 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
			 *     @type string $token      User&#039;s session token used.
			 *     @type string $hmac       The security hash for the cookie.
			 *     @type string $scheme     The cookie scheme to use.
			 * }
			 */
			do_action( &#039;auth_cookie_bad_hash&#039;, $cookie_elements );
			return false;
		}

		$manager = WP_Session_Tokens::get_instance( $user-&gt;ID );
		if ( ! $manager-&gt;verify( $token ) ) {
			/**
			 * Fires if a bad session token is encountered.
			 *
			 * @since 4.0.0
			 *
			 * @param string[] $cookie_elements {
			 *     Authentication cookie components. None of the components should be assumed
			 *     to be valid as they come directly from a client-provided cookie value.
			 *
			 *     @type string $username   User&#039;s username.
			 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
			 *     @type string $token      User&#039;s session token used.
			 *     @type string $hmac       The security hash for the cookie.
			 *     @type string $scheme     The cookie scheme to use.
			 * }
			 */
			do_action( &#039;auth_cookie_bad_session_token&#039;, $cookie_elements );
			return false;
		}

		// Ajax/POST grace period set above.
		if ( $expiration &lt; time() ) {
			$GLOBALS[&#039;login_grace_period&#039;] = 1;
		}

		/**
		 * Fires once an authentication cookie has been validated.
		 *
		 * @since 2.7.0
		 *
		 * @param string[] $cookie_elements {
		 *     Authentication cookie components.
		 *
		 *     @type string $username   User&#039;s username.
		 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
		 *     @type string $token      User&#039;s session token used.
		 *     @type string $hmac       The security hash for the cookie.
		 *     @type string $scheme     The cookie scheme to use.
		 * }
		 * @param WP_User  $user            User object.
		 */
		do_action( &#039;auth_cookie_valid&#039;, $cookie_elements, $user );

		return $user-&gt;ID;
	}
endif;

if ( ! function_exists( &#039;wp_generate_auth_cookie&#039; ) ) :
	/**
	 * Generates authentication cookie contents.
	 *
	 * @since 2.5.0
	 * @since 4.0.0 The `$token` parameter was added.
	 *
	 * @param int    $user_id    User ID.
	 * @param int    $expiration The time the cookie expires as a UNIX timestamp.
	 * @param string $scheme     Optional. The cookie scheme to use: &#039;auth&#039;, &#039;secure_auth&#039;, or &#039;logged_in&#039;.
	 *                           Default &#039;auth&#039;.
	 * @param string $token      User&#039;s session token to use for this cookie.
	 * @return string Authentication cookie contents. Empty string if user does not exist.
	 */
	function wp_generate_auth_cookie( $user_id, $expiration, $scheme = &#039;auth&#039;, $token = &#039;&#039; ) {
		$user = get_userdata( $user_id );
		if ( ! $user ) {
			return &#039;&#039;;
		}

		if ( ! $token ) {
			$manager = WP_Session_Tokens::get_instance( $user_id );
			$token   = $manager-&gt;create( $expiration );
		}

		if ( str_starts_with( $user-&gt;user_pass, &#039;$P$&#039; ) || str_starts_with( $user-&gt;user_pass, &#039;$2y$&#039; ) ) {
			// Retain previous behaviour of phpass or vanilla bcrypt hashed passwords.
			$pass_frag = substr( $user-&gt;user_pass, 8, 4 );
		} else {
			// Otherwise, use a substring from the end of the hash to avoid dealing with potentially long hash prefixes.
			$pass_frag = substr( $user-&gt;user_pass, -4 );
		}

		$key = wp_hash( $user-&gt;user_login . &#039;|&#039; . $pass_frag . &#039;|&#039; . $expiration . &#039;|&#039; . $token, $scheme );

		$hash = hash_hmac( &#039;sha256&#039;, $user-&gt;user_login . &#039;|&#039; . $expiration . &#039;|&#039; . $token, $key );

		$cookie = $user-&gt;user_login . &#039;|&#039; . $expiration . &#039;|&#039; . $token . &#039;|&#039; . $hash;

		/**
		 * Filters the authentication cookie.
		 *
		 * @since 2.5.0
		 * @since 4.0.0 The `$token` parameter was added.
		 *
		 * @param string $cookie     Authentication cookie.
		 * @param int    $user_id    User ID.
		 * @param int    $expiration The time the cookie expires as a UNIX timestamp.
		 * @param string $scheme     Cookie scheme used. Accepts &#039;auth&#039;, &#039;secure_auth&#039;, or &#039;logged_in&#039;.
		 * @param string $token      User&#039;s session token used.
		 */
		return apply_filters( &#039;auth_cookie&#039;, $cookie, $user_id, $expiration, $scheme, $token );
	}
endif;

if ( ! function_exists( &#039;wp_parse_auth_cookie&#039; ) ) :
	/**
	 * Parses a cookie into its components.
	 *
	 * @since 2.7.0
	 * @since 4.0.0 The `$token` element was added to the return value.
	 *
	 * @param string $cookie Authentication cookie.
	 * @param string $scheme Optional. The cookie scheme to use: &#039;auth&#039;, &#039;secure_auth&#039;, or &#039;logged_in&#039;.
	 * @return string[]|false {
	 *     Authentication cookie components. None of the components should be assumed
	 *     to be valid as they come directly from a client-provided cookie value. If
	 *     the cookie value is malformed, false is returned.
	 *
	 *     @type string $username   User&#039;s username.
	 *     @type string $expiration The time the cookie expires as a UNIX timestamp.
	 *     @type string $token      User&#039;s session token used.
	 *     @type string $hmac       The security hash for the cookie.
	 *     @type string $scheme     The cookie scheme to use.
	 * }
	 */
	function wp_parse_auth_cookie( $cookie = &#039;&#039;, $scheme = &#039;&#039; ) {
		if ( empty( $cookie ) ) {
			switch ( $scheme ) {
				case &#039;auth&#039;:
					$cookie_name = AUTH_COOKIE;
					break;
				case &#039;secure_auth&#039;:
					$cookie_name = SECURE_AUTH_COOKIE;
					break;
				case &#039;logged_in&#039;:
					$cookie_name = LOGGED_IN_COOKIE;
					break;
				default:
					if ( is_ssl() ) {
						$cookie_name = SECURE_AUTH_COOKIE;
						$scheme      = &#039;secure_auth&#039;;
					} else {
						$cookie_name = AUTH_COOKIE;
						$scheme      = &#039;auth&#039;;
					}
			}

			if ( empty( $_COOKIE[ $cookie_name ] ) ) {
				return false;
			}
			$cookie = $_COOKIE[ $cookie_name ];
		}

		$cookie_elements = explode( &#039;|&#039;, $cookie );
		if ( count( $cookie_elements ) !== 4 ) {
			return false;
		}

		list( $username, $expiration, $token, $hmac ) = $cookie_elements;

		return compact( &#039;username&#039;, &#039;expiration&#039;, &#039;token&#039;, &#039;hmac&#039;, &#039;scheme&#039; );
	}
endif;

if ( ! function_exists( &#039;wp_set_auth_cookie&#039; ) ) :
	/**
	 * Sets the authentication cookies for a given user ID.
	 *
	 * The `$remember` parameter controls cookie persistence:
	 * - If true, the cookie is persistent (default 14 days, filterable via {@see &#039;auth_cookie_expiration&#039;}).
	 * - If false, the cookie is a browser session cookie (expires when the browser closes).
	 *   Internally, {@see &#039;auth_cookie_expiration&#039;} is still applied, to expire the login after
	 *   two days or when the browser is closed, whichever occurs first.
	 *
	 * @since 2.5.0
	 * @since 4.3.0 Added the `$token` parameter.
	 *
	 * @param int         $user_id  User ID.
	 * @param bool        $remember Whether to remember the user.
	 * @param bool|string $secure   Whether the auth cookie should only be sent over HTTPS. Default is an empty
	 *                              string which means the value of `is_ssl()` will be used.
	 * @param string      $token    Optional. User&#039;s session token to use for this cookie.
	 */
	function wp_set_auth_cookie( $user_id, $remember = false, $secure = &#039;&#039;, $token = &#039;&#039; ) {
		if ( $remember ) {
			/**
			 * Filters the duration of the authentication cookie expiration period.
			 *
			 * @since 2.8.0
			 *
			 * @param int  $length   Duration of the expiration period in seconds.
			 * @param int  $user_id  User ID.
			 * @param bool $remember Whether to remember the user login. Default false.
			 */
			$expiration = time() + apply_filters( &#039;auth_cookie_expiration&#039;, 14 * DAY_IN_SECONDS, $user_id, $remember );

			/*
			 * Ensure the browser will continue to send the cookie after the expiration time is reached.
			 * Needed for the login grace period in wp_validate_auth_cookie().
			 */
			$expire = $expiration + ( 12 * HOUR_IN_SECONDS );
		} else {
			/** This filter is documented in wp-includes/pluggable.php */
			$expiration = time() + apply_filters( &#039;auth_cookie_expiration&#039;, 2 * DAY_IN_SECONDS, $user_id, $remember );
			$expire     = 0;
		}

		if ( &#039;&#039; === $secure ) {
			$secure = is_ssl();
		}

		// Front-end cookie is secure when the auth cookie is secure and the site&#039;s home URL uses HTTPS.
		$secure_logged_in_cookie = $secure &amp;&amp; &#039;https&#039; === parse_url( get_option( &#039;home&#039; ), PHP_URL_SCHEME );

		/**
		 * Filters whether the auth cookie should only be sent over HTTPS.
		 *
		 * @since 3.1.0
		 *
		 * @param bool $secure  Whether the cookie should only be sent over HTTPS.
		 * @param int  $user_id User ID.
		 */
		$secure = apply_filters( &#039;secure_auth_cookie&#039;, $secure, $user_id );

		/**
		 * Filters whether the logged in cookie should only be sent over HTTPS.
		 *
		 * @since 3.1.0
		 *
		 * @param bool $secure_logged_in_cookie Whether the logged in cookie should only be sent over HTTPS.
		 * @param int  $user_id                 User ID.
		 * @param bool $secure                  Whether the auth cookie should only be sent over HTTPS.
		 */
		$secure_logged_in_cookie = apply_filters( &#039;secure_logged_in_cookie&#039;, $secure_logged_in_cookie, $user_id, $secure );

		if ( $secure ) {
			$auth_cookie_name = SECURE_AUTH_COOKIE;
			$scheme           = &#039;secure_auth&#039;;
		} else {
			$auth_cookie_name = AUTH_COOKIE;
			$scheme           = &#039;auth&#039;;
		}

		if ( &#039;&#039; === $token ) {
			$manager = WP_Session_Tokens::get_instance( $user_id );
			$token   = $manager-&gt;create( $expiration );
		}

		$auth_cookie      = wp_generate_auth_cookie( $user_id, $expiration, $scheme, $token );
		$logged_in_cookie = wp_generate_auth_cookie( $user_id, $expiration, &#039;logged_in&#039;, $token );

		/**
		 * Fires immediately before the authentication cookie is set.
		 *
		 * @since 2.5.0
		 * @since 4.9.0 The `$token` parameter was added.
		 *
		 * @param string $auth_cookie Authentication cookie value.
		 * @param int    $expire      The time the login grace period expires as a UNIX timestamp.
		 *                            Default is 12 hours past the cookie&#039;s expiration time.
		 * @param int    $expiration  The time when the authentication cookie expires as a UNIX timestamp.
		 *                            Default is 14 days from now.
		 * @param int    $user_id     User ID.
		 * @param string $scheme      Authentication scheme. Values include &#039;auth&#039; or &#039;secure_auth&#039;.
		 * @param string $token       User&#039;s session token to use for this cookie.
		 */
		do_action( &#039;set_auth_cookie&#039;, $auth_cookie, $expire, $expiration, $user_id, $scheme, $token );

		/**
		 * Fires immediately before the logged-in authentication cookie is set.
		 *
		 * @since 2.6.0
		 * @since 4.9.0 The `$token` parameter was added.
		 *
		 * @param string $logged_in_cookie The logged-in cookie value.
		 * @param int    $expire           The time the login grace period expires as a UNIX timestamp.
		 *                                 Default is 12 hours past the cookie&#039;s expiration time.
		 * @param int    $expiration       The time when the logged-in authentication cookie expires as a UNIX timestamp.
		 *                                 Default is 14 days from now.
		 * @param int    $user_id          User ID.
		 * @param string $scheme           Authentication scheme. Default &#039;logged_in&#039;.
		 * @param string $token            User&#039;s session token to use for this cookie.
		 */
		do_action( &#039;set_logged_in_cookie&#039;, $logged_in_cookie, $expire, $expiration, $user_id, &#039;logged_in&#039;, $token );

		/**
		 * Allows preventing auth cookies from actually being sent to the client.
		 *
		 * @since 4.7.4
		 * @since 6.2.0 The `$expire`, `$expiration`, `$user_id`, `$scheme`, and `$token` parameters were added.
		 *
		 * @param bool   $send       Whether to send auth cookies to the client. Default true.
		 * @param int    $expire     The time the login grace period expires as a UNIX timestamp.
		 *                           Default is 12 hours past the cookie&#039;s expiration time. Zero when clearing cookies.
		 * @param int    $expiration The time when the logged-in authentication cookie expires as a UNIX timestamp.
		 *                           Default is 14 days from now. Zero when clearing cookies.
		 * @param int    $user_id    User ID. Zero when clearing cookies.
		 * @param string $scheme     Authentication scheme. Values include &#039;auth&#039; or &#039;secure_auth&#039;.
		 *                           Empty string when clearing cookies.
		 * @param string $token      User&#039;s session token to use for this cookie. Empty string when clearing cookies.
		 */
		if ( ! apply_filters( &#039;send_auth_cookies&#039;, true, $expire, $expiration, $user_id, $scheme, $token ) ) {
			return;
		}

		setcookie( $auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN, $secure, true );
		setcookie( $auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, COOKIE_DOMAIN, $secure, true );
		setcookie( LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true );
		if ( COOKIEPATH !== SITECOOKIEPATH ) {
			setcookie( LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true );
		}
	}
endif;

if ( ! function_exists( &#039;wp_clear_auth_cookie&#039; ) ) :
	/**
	 * Removes all of the cookies associated with authentication.
	 *
	 * @since 2.5.0
	 */
	function wp_clear_auth_cookie() {
		/**
		 * Fires just before the authentication cookies are cleared.
		 *
		 * @since 2.7.0
		 */
		do_action( &#039;clear_auth_cookie&#039; );

		/** This filter is documented in wp-includes/pluggable.php */
		if ( ! apply_filters( &#039;send_auth_cookies&#039;, true, 0, 0, 0, &#039;&#039;, &#039;&#039; ) ) {
			return;
		}

		// Auth cookies.
		setcookie( AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN );
		setcookie( AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN );
		setcookie( LOGGED_IN_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( LOGGED_IN_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Settings cookies.
		setcookie( &#039;wp-settings-&#039; . get_current_user_id(), &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
		setcookie( &#039;wp-settings-time-&#039; . get_current_user_id(), &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH );

		// Old cookies.
		setcookie( AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Even older cookies.
		setcookie( USER_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( PASS_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( USER_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
		setcookie( PASS_COOKIE, &#039; &#039;, time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Post password cookie.
		setcookie( &#039;wp-postpass_&#039; . COOKIEHASH, &#039; &#039;, time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
	}
endif;

if ( ! function_exists( &#039;is_user_logged_in&#039; ) ) :
	/**
	 * Determines whether the current visitor is a logged in user.
	 *
	 * For more information on this and similar theme functions, check out
	 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
	 * Conditional Tags} article in the Theme Developer Handbook.
	 *
	 * @since 2.0.0
	 *
	 * @return bool True if user is logged in, false if not logged in.
	 */
	function is_user_logged_in() {
		$user = wp_get_current_user();

		return $user-&gt;exists();
	}
endif;

if ( ! function_exists( &#039;auth_redirect&#039; ) ) :
	/**
	 * Checks if a user is logged in, if not it redirects them to the login page.
	 *
	 * When this code is called from a page, it checks to see if the user viewing the page is logged in.
	 * If the user is not logged in, they are redirected to the login page. The user is redirected
	 * in such a way that, upon logging in, they will be sent directly to the page they were originally
	 * trying to access.
	 *
	 * @since 1.5.0
	 */
	function auth_redirect() {
		$secure = ( is_ssl() || force_ssl_admin() );

		/**
		 * Filters whether to use a secure authentication redirect.
		 *
		 * @since 3.1.0
		 *
		 * @param bool $secure Whether to use a secure authentication redirect. Default false.
		 */
		$secure = apply_filters( &#039;secure_auth_redirect&#039;, $secure );

		// If https is required and request is http, redirect.
		if ( $secure &amp;&amp; ! is_ssl() &amp;&amp; str_contains( $_SERVER[&#039;REQUEST_URI&#039;], &#039;wp-admin&#039; ) ) {
			if ( str_starts_with( $_SERVER[&#039;REQUEST_URI&#039;], &#039;http&#039; ) ) {
				wp_redirect( set_url_scheme( $_SERVER[&#039;REQUEST_URI&#039;], &#039;https&#039; ) );
				exit;
			} else {
				wp_redirect( &#039;https://&#039; . $_SERVER[&#039;HTTP_HOST&#039;] . $_SERVER[&#039;REQUEST_URI&#039;] );
				exit;
			}
		}

		/**
		 * Filters the authentication redirect scheme.
		 *
		 * @since 2.9.0
		 *
		 * @param string $scheme Authentication redirect scheme. Default empty.
		 */
		$scheme = apply_filters( &#039;auth_redirect_scheme&#039;, &#039;&#039; );

		$user_id = wp_validate_auth_cookie( &#039;&#039;, $scheme );
		if ( $user_id ) {
			/**
			 * Fires before the authentication redirect.
			 *
			 * @since 2.8.0
			 *
			 * @param int $user_id User ID.
			 */
			do_action( &#039;auth_redirect&#039;, $user_id );

			// If the user wants ssl but the session is not ssl, redirect.
			if ( ! $secure &amp;&amp; get_user_option( &#039;use_ssl&#039;, $user_id ) &amp;&amp; str_contains( $_SERVER[&#039;REQUEST_URI&#039;], &#039;wp-admin&#039; ) ) {
				if ( str_starts_with( $_SERVER[&#039;REQUEST_URI&#039;], &#039;http&#039; ) ) {
					wp_redirect( set_url_scheme( $_SERVER[&#039;REQUEST_URI&#039;], &#039;https&#039; ) );
					exit;
				} else {
					wp_redirect( &#039;https://&#039; . $_SERVER[&#039;HTTP_HOST&#039;] . $_SERVER[&#039;REQUEST_URI&#039;] );
					exit;
				}
			}

			return; // The cookie is good, so we&#039;re done.
		}

		// The cookie is no good, so force login.
		nocache_headers();

		if ( str_contains( $_SERVER[&#039;REQUEST_URI&#039;], &#039;/options.php&#039; ) &amp;&amp; wp_get_referer() ) {
			$redirect = wp_get_referer();
		} else {
			$redirect = set_url_scheme( &#039;http://&#039; . $_SERVER[&#039;HTTP_HOST&#039;] . $_SERVER[&#039;REQUEST_URI&#039;] );
		}

		$login_url = wp_login_url( $redirect, true );

		wp_redirect( $login_url );
		exit;
	}
endif;

if ( ! function_exists( &#039;check_admin_referer&#039; ) ) :
	/**
	 * Ensures intent by verifying that a user was referred from another admin page with the correct security nonce.
	 *
	 * This function ensures the user intends to perform a given action, which helps protect against clickjacking style
	 * attacks. It verifies intent, not authorization, therefore it does not verify the user&#039;s capabilities. This should
	 * be performed with `current_user_can()` or similar.
	 *
	 * If the nonce value is invalid, the function will exit with an &quot;Are You Sure?&quot; style message.
	 *
	 * @since 1.2.0
	 * @since 2.5.0 The `$query_arg` parameter was added.
	 *
	 * @param int|string $action    The nonce action.
	 * @param string     $query_arg Optional. Key to check for nonce in `$_REQUEST`. Default &#039;_wpnonce&#039;.
	 * @return int|false 1 if the nonce is valid and generated between 0-12 hours ago,
	 *                   2 if the nonce is valid and generated between 12-24 hours ago.
	 *                   False if the nonce is invalid. Only possible when `$action` is -1,
	 *                   as the function otherwise exits rather than returning false.
	 * @phpstan-return ( $action is -1 ? int|false : int )
	 */
	function check_admin_referer( $action = -1, $query_arg = &#039;_wpnonce&#039; ) {
		if ( -1 === $action ) {
			_doing_it_wrong( __FUNCTION__, __( &#039;You should specify an action to be verified by using the first parameter.&#039; ), &#039;3.2.0&#039; );
		}

		$adminurl = strtolower( admin_url() );
		$referer  = strtolower( wp_get_referer() );
		$result   = isset( $_REQUEST[ $query_arg ] ) ? wp_verify_nonce( $_REQUEST[ $query_arg ], $action ) : false;

		/**
		 * Fires once the admin request has been validated or not.
		 *
		 * @since 1.5.1
		 *
		 * @param string    $action The nonce action.
		 * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between
		 *                          0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
		 */
		do_action( &#039;check_admin_referer&#039;, $action, $result );

		if ( ! $result &amp;&amp; ! ( -1 === $action &amp;&amp; str_starts_with( $referer, $adminurl ) ) ) {
			wp_nonce_ays( $action );
			die();
		}

		return $result;
	}
endif;

if ( ! function_exists( &#039;check_ajax_referer&#039; ) ) :
	/**
	 * Verifies the Ajax request to prevent processing requests external of the blog.
	 *
	 * @since 2.0.3
	 *
	 * @param int|string   $action    Action nonce.
	 * @param false|string $query_arg Optional. Key to check for the nonce in `$_REQUEST` (since 2.5). If false,
	 *                                `$_REQUEST` values will be evaluated for &#039;_ajax_nonce&#039;, and &#039;_wpnonce&#039;
	 *                                (in that order). Default false.
	 * @param bool         $stop      Optional. Whether to stop early when the nonce cannot be verified.
	 *                                Default true.
	 * @return int|false 1 if the nonce is valid and generated between 0-12 hours ago,
	 *                   2 if the nonce is valid and generated between 12-24 hours ago.
	 *                   False if the nonce is invalid. Only possible when `$stop` is false,
	 *                   as the function otherwise exits rather than returning false.
	 * @phpstan-return ( $stop is true ? int : int|false )
	 */
	function check_ajax_referer( $action = -1, $query_arg = false, $stop = true ) {
		if ( -1 === $action ) {
			_doing_it_wrong( __FUNCTION__, __( &#039;You should specify an action to be verified by using the first parameter.&#039; ), &#039;4.7.0&#039; );
		}

		$nonce = &#039;&#039;;

		if ( $query_arg &amp;&amp; isset( $_REQUEST[ $query_arg ] ) ) {
			$nonce = $_REQUEST[ $query_arg ];
		} elseif ( isset( $_REQUEST[&#039;_ajax_nonce&#039;] ) ) {
			$nonce = $_REQUEST[&#039;_ajax_nonce&#039;];
		} elseif ( isset( $_REQUEST[&#039;_wpnonce&#039;] ) ) {
			$nonce = $_REQUEST[&#039;_wpnonce&#039;];
		}

		$result = wp_verify_nonce( $nonce, $action );

		/**
		 * Fires once the Ajax request has been validated or not.
		 *
		 * @since 2.1.0
		 *
		 * @param string    $action The Ajax nonce action.
		 * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between
		 *                          0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
		 */
		do_action( &#039;check_ajax_referer&#039;, $action, $result );

		if ( $stop &amp;&amp; false === $result ) {
			if ( wp_doing_ajax() ) {
				wp_die( -1, 403 );
			} else {
				die( &#039;-1&#039; );
			}
		}

		return $result;
	}
endif;

if ( ! function_exists( &#039;wp_redirect&#039; ) ) :
	/**
	 * Redirects to another page.
	 *
	 * Note: wp_redirect() does not exit automatically, and should almost always be
	 * followed by a call to `exit;`:
	 *
	 *     wp_redirect( $url );
	 *     exit;
	 *
	 * Exiting can also be selectively manipulated by using wp_redirect() as a conditional
	 * in conjunction with the {@see &#039;wp_redirect&#039;} and {@see &#039;wp_redirect_status&#039;} filters:
	 *
	 *     if ( wp_redirect( $url ) ) {
	 *         exit;
	 *     }
	 *
	 * @since 1.5.1
	 * @since 5.1.0 The `$x_redirect_by` parameter was added.
	 * @since 5.4.0 On invalid status codes, wp_die() is called.
	 *
	 * @global bool $is_IIS
	 *
	 * @param string       $location      The path or URL to redirect to.
	 * @param int          $status        Optional. HTTP response status code to use. Default &#039;302&#039; (Moved Temporarily).
	 * @param string|false $x_redirect_by Optional. The application doing the redirect or false to omit. Default &#039;WordPress&#039;.
	 * @return bool False if the redirect was canceled, true otherwise.
	 */
	function wp_redirect( $location, $status = 302, $x_redirect_by = &#039;WordPress&#039; ) {
		global $is_IIS;

		/**
		 * Filters the redirect location.
		 *
		 * @since 2.1.0
		 *
		 * @param string $location The path or URL to redirect to.
		 * @param int    $status   The HTTP response status code to use.
		 */
		$location = apply_filters( &#039;wp_redirect&#039;, $location, $status );

		/**
		 * Filters the redirect HTTP response status code to use.
		 *
		 * @since 2.3.0
		 *
		 * @param int    $status   The HTTP response status code to use.
		 * @param string $location The path or URL to redirect to.
		 */
		$status = apply_filters( &#039;wp_redirect_status&#039;, $status, $location );

		if ( ! $location ) {
			return false;
		}

		if ( $status &lt; 300 || 399 &lt; $status ) {
			wp_die( __( &#039;HTTP redirect status code must be a redirection code, 3xx.&#039; ) );
		}

		$location = wp_sanitize_redirect( $location );

		if ( ! $is_IIS &amp;&amp; &#039;cgi-fcgi&#039; !== PHP_SAPI ) {
			status_header( $status ); // This causes problems on IIS and some FastCGI setups.
		}

		/**
		 * Filters the value of the `X-Redirect-By` HTTP header.
		 *
		 * Allows applications to identify themselves when they&#039;re doing a redirect.
		 *
		 * @since 5.1.0
		 *
		 * @param string|false $x_redirect_by The application doing the redirect or false to omit the header.
		 * @param int          $status        Status code to use.
		 * @param string       $location      The path to redirect to.
		 */
		$x_redirect_by = apply_filters( &#039;x_redirect_by&#039;, $x_redirect_by, $status, $location );
		if ( is_string( $x_redirect_by ) ) {
			header( &quot;X-Redirect-By: $x_redirect_by&quot; );
		}

		header( &quot;Location: $location&quot;, true, $status );

		return true;
	}
endif;

if ( ! function_exists( &#039;wp_sanitize_redirect&#039; ) ) :
	/**
	 * Sanitizes a URL for use in a redirect.
	 *
	 * @since 2.3.0
	 *
	 * @param string $location The path to redirect to.
	 * @return string Redirect-sanitized URL.
	 */
	function wp_sanitize_redirect( $location ) {
		// Encode spaces.
		$location = str_replace( &#039; &#039;, &#039;%20&#039;, $location );

		$regex    = &#039;/
		(
			(?: [\xC2-\xDF][\x80-\xBF]        # double-byte sequences   110xxxxx 10xxxxxx
			|   \xE0[\xA0-\xBF][\x80-\xBF]    # triple-byte sequences   1110xxxx 10xxxxxx * 2
			|   [\xE1-\xEC][\x80-\xBF]{2}
			|   \xED[\x80-\x9F][\x80-\xBF]
			|   [\xEE-\xEF][\x80-\xBF]{2}
			|   \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3
			|   [\xF1-\xF3][\x80-\xBF]{3}
			|   \xF4[\x80-\x8F][\x80-\xBF]{2}
		){1,40}                              # ...one or more times
		)/x&#039;;
		$location = preg_replace_callback( $regex, &#039;_wp_sanitize_utf8_in_redirect&#039;, $location );
		$location = preg_replace( &#039;|[^a-z0-9-~+_.?#=&amp;;,/:%!*\[\]()@]|i&#039;, &#039;&#039;, $location );
		$location = wp_kses_no_null( $location );

		// Remove %0D and %0A from location.
		$strip = array( &#039;%0d&#039;, &#039;%0a&#039;, &#039;%0D&#039;, &#039;%0A&#039; );
		return _deep_replace( $strip, $location );
	}

	/**
	 * URL encodes UTF-8 characters in a URL.
	 *
	 * @ignore
	 * @since 4.2.0
	 * @access private
	 *
	 * @see wp_sanitize_redirect()
	 *
	 * @param array $matches RegEx matches against the redirect location.
	 * @return string URL-encoded version of the first RegEx match.
	 */
	function _wp_sanitize_utf8_in_redirect( $matches ) {
		return urlencode( $matches[0] );
	}
endif;

if ( ! function_exists( &#039;wp_safe_redirect&#039; ) ) :
	/**
	 * Performs a safe (local) redirect, using wp_redirect().
	 *
	 * Checks whether the $location is using an allowed host, if it has an absolute
	 * path. A plugin can therefore set or remove allowed host(s) to or from the
	 * list.
	 *
	 * If the host is not allowed, then the redirect defaults to wp-admin on the siteurl
	 * instead. This prevents malicious redirects which redirect to another host,
	 * but only used in a few places.
	 *
	 * Note: wp_safe_redirect() does not exit automatically, and should almost always be
	 * followed by a call to `exit;`:
	 *
	 *     wp_safe_redirect( $url );
	 *     exit;
	 *
	 * Exiting can also be selectively manipulated by using wp_safe_redirect() as a conditional
	 * in conjunction with the {@see &#039;wp_redirect&#039;} and {@see &#039;wp_redirect_status&#039;} filters:
	 *
	 *     if ( wp_safe_redirect( $url ) ) {
	 *         exit;
	 *     }
	 *
	 * @since 2.3.0
	 * @since 5.1.0 The return value from wp_redirect() is now passed on, and the `$x_redirect_by` parameter was added.
	 *
	 * @param string       $location      The path or URL to redirect to.
	 * @param int          $status        Optional. HTTP response status code to use. Default &#039;302&#039; (Moved Temporarily).
	 * @param string|false $x_redirect_by Optional. The application doing the redirect or false to omit. Default &#039;WordPress&#039;.
	 * @return bool False if the redirect was canceled, true otherwise.
	 */
	function wp_safe_redirect( $location, $status = 302, $x_redirect_by = &#039;WordPress&#039; ) {

		// Need to look at the URL the way it will end up in wp_redirect().
		$location = wp_sanitize_redirect( $location );

		/**
		 * Filters the redirect fallback URL for when the provided redirect is not safe (local).
		 *
		 * @since 4.3.0
		 *
		 * @param string $fallback_url The fallback URL to use by default.
		 * @param int    $status       The HTTP response status code to use.
		 */
		$fallback_url = apply_filters( &#039;wp_safe_redirect_fallback&#039;, admin_url(), $status );

		$location = wp_validate_redirect( $location, $fallback_url );

		return wp_redirect( $location, $status, $x_redirect_by );
	}
endif;

if ( ! function_exists( &#039;wp_validate_redirect&#039; ) ) :
	/**
	 * Validates a URL for use in a redirect.
	 *
	 * Checks whether the $location is using an allowed host, if it has an absolute
	 * path. A plugin can therefore set or remove allowed host(s) to or from the
	 * list.
	 *
	 * If the host is not allowed, then the redirect is to $fallback_url supplied.
	 *
	 * @since 2.8.1
	 *
	 * @param string $location     The redirect to validate.
	 * @param string $fallback_url The value to return if $location is not allowed.
	 * @return string Redirect-sanitized URL.
	 */
	function wp_validate_redirect( $location, $fallback_url = &#039;&#039; ) {
		$location = wp_sanitize_redirect( trim( $location, &quot; \t\n\r\0\x08\x0B&quot; ) );
		// Browsers will assume &#039;http&#039; is your protocol, and will obey a redirect to a URL starting with &#039;//&#039;.
		if ( str_starts_with( $location, &#039;//&#039; ) ) {
			$location = &#039;http:&#039; . $location;
		}

		/*
		 * In PHP 5 parse_url() may fail if the URL query part contains &#039;http://&#039;.
		 * See https://bugs.php.net/bug.php?id=38143
		 */
		$cut  = strpos( $location, &#039;?&#039; );
		$test = $cut ? substr( $location, 0, $cut ) : $location;

		$lp = parse_url( $test );

		// Give up if malformed URL.
		if ( false === $lp ) {
			return $fallback_url;
		}

		// Allow only &#039;http&#039; and &#039;https&#039; schemes. No &#039;data:&#039;, etc.
		if ( isset( $lp[&#039;scheme&#039;] ) &amp;&amp; ! ( &#039;http&#039; === $lp[&#039;scheme&#039;] || &#039;https&#039; === $lp[&#039;scheme&#039;] ) ) {
			return $fallback_url;
		}

		if ( ! isset( $lp[&#039;host&#039;] ) &amp;&amp; ! empty( $lp[&#039;path&#039;] ) &amp;&amp; &#039;/&#039; !== $lp[&#039;path&#039;][0] ) {
			$path = &#039;&#039;;
			if ( ! empty( $_SERVER[&#039;REQUEST_URI&#039;] ) ) {
				$path = dirname( parse_url( &#039;http://placeholder&#039; . $_SERVER[&#039;REQUEST_URI&#039;], PHP_URL_PATH ) . &#039;?&#039; );
				$path = wp_normalize_path( $path );
			}
			$location = &#039;/&#039; . ltrim( $path . &#039;/&#039;, &#039;/&#039; ) . $location;
		}

		/*
		 * Reject if certain components are set but host is not.
		 * This catches URLs like https:host.com for which parse_url() does not set the host field.
		 */
		if ( ! isset( $lp[&#039;host&#039;] ) &amp;&amp; ( isset( $lp[&#039;scheme&#039;] ) || isset( $lp[&#039;user&#039;] ) || isset( $lp[&#039;pass&#039;] ) || isset( $lp[&#039;port&#039;] ) ) ) {
			return $fallback_url;
		}

		// Reject malformed components parse_url() can return on odd inputs.
		foreach ( array( &#039;user&#039;, &#039;pass&#039;, &#039;host&#039; ) as $component ) {
			if ( isset( $lp[ $component ] ) &amp;&amp; strpbrk( $lp[ $component ], &#039;:/?#@&#039; ) ) {
				return $fallback_url;
			}
		}

		$wpp = parse_url( home_url() );

		/**
		 * Filters the list of allowed hosts to redirect to.
		 *
		 * @since 2.3.0
		 *
		 * @param string[] $hosts An array of allowed host names.
		 * @param string   $host  The host name of the redirect destination; empty string if not set.
		 */
		$allowed_hosts = (array) apply_filters( &#039;allowed_redirect_hosts&#039;, array( $wpp[&#039;host&#039;] ), $lp[&#039;host&#039;] ?? &#039;&#039; );

		if ( isset( $lp[&#039;host&#039;] ) &amp;&amp; ( ! in_array( $lp[&#039;host&#039;], $allowed_hosts, true ) &amp;&amp; strtolower( $wpp[&#039;host&#039;] ) !== $lp[&#039;host&#039;] ) ) {
			$location = $fallback_url;
		}

		return $location;
	}
endif;

if ( ! function_exists( &#039;wp_notify_postauthor&#039; ) ) :
	/**
	 * Notifies an author (and/or others) of a comment/trackback/pingback on a post.
	 *
	 * @since 1.0.0
	 *
	 * @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
	 * @param string         $deprecated Not used.
	 * @return bool True on completion. False if no email addresses were specified.
	 */
	function wp_notify_postauthor( $comment_id, $deprecated = null ) {
		if ( null !== $deprecated ) {
			_deprecated_argument( __FUNCTION__, &#039;3.8.0&#039; );
		}

		$comment = get_comment( $comment_id );
		if ( empty( $comment ) || empty( $comment-&gt;comment_post_ID ) ) {
			return false;
		}

		$post   = get_post( $comment-&gt;comment_post_ID );
		$author = get_userdata( $post-&gt;post_author );

		// Who to notify? By default, just the post author, but others can be added.
		$emails = array();
		if ( $author ) {
			$emails[] = $author-&gt;user_email;
		}

		/**
		 * Filters the list of email addresses to receive a comment notification.
		 *
		 * By default, only post authors are notified of comments. This filter allows
		 * others to be added.
		 *
		 * @since 3.7.0
		 *
		 * @param string[] $emails     An array of email addresses to receive a comment notification.
		 * @param string   $comment_id The comment ID as a numeric string.
		 */
		$emails = apply_filters( &#039;comment_notification_recipients&#039;, $emails, $comment-&gt;comment_ID );
		$emails = array_filter( $emails );

		// If there are no addresses to send the comment to, bail.
		if ( ! count( $emails ) ) {
			return false;
		}

		// Facilitate unsetting below without knowing the keys.
		$emails = array_flip( $emails );

		/**
		 * Filters whether to notify comment authors of their comments on their own posts.
		 *
		 * By default, comment authors aren&#039;t notified of their comments on their own
		 * posts. This filter allows you to override that.
		 *
		 * @since 3.8.0
		 *
		 * @param bool   $notify     Whether to notify the post author of their own comment.
		 *                           Default false.
		 * @param string $comment_id The comment ID as a numeric string.
		 */
		$notify_author = apply_filters( &#039;comment_notification_notify_author&#039;, false, $comment-&gt;comment_ID );

		// The comment was left by the author.
		if ( $author &amp;&amp; ! $notify_author &amp;&amp; (int) $comment-&gt;user_id === (int) $post-&gt;post_author ) {
			unset( $emails[ $author-&gt;user_email ] );
		}

		// The author moderated a comment on their own post.
		if ( $author &amp;&amp; ! $notify_author &amp;&amp; get_current_user_id() === (int) $post-&gt;post_author ) {
			unset( $emails[ $author-&gt;user_email ] );
		}

		// The post author is no longer a member of the blog.
		if ( $author &amp;&amp; ! $notify_author &amp;&amp; ! user_can( $post-&gt;post_author, &#039;read_post&#039;, $post-&gt;ID ) ) {
			unset( $emails[ $author-&gt;user_email ] );
		}

		// If there&#039;s no email to send the comment to, bail, otherwise flip array back around for use below.
		if ( ! count( $emails ) ) {
			return false;
		} else {
			$emails = array_flip( $emails );
		}

		$comment_author_domain = &#039;&#039;;
		if ( WP_Http::is_ip_address( $comment-&gt;comment_author_IP ) ) {
			$comment_author_domain = gethostbyaddr( $comment-&gt;comment_author_IP );
		}

		/*
		 * The blogname option is escaped with esc_html() on the way into the database in sanitize_option().
		 * We want to reverse this for the plain text arena of emails.
		 */
		$blogname        = wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES );
		$comment_content = wp_specialchars_decode( $comment-&gt;comment_content );

		$wp_email = &#039;wordpress@&#039; . preg_replace( &#039;#^www\.#&#039;, &#039;&#039;, wp_parse_url( network_home_url(), PHP_URL_HOST ) );

		if ( &#039;&#039; === $comment-&gt;comment_author ) {
			$from = &quot;From: \&quot;$blogname\&quot; &lt;$wp_email&gt;&quot;;
			if ( &#039;&#039; !== $comment-&gt;comment_author_email ) {
				$reply_to = &quot;Reply-To: $comment-&gt;comment_author_email&quot;;
			}
		} else {
			$from = &quot;From: \&quot;$comment-&gt;comment_author\&quot; &lt;$wp_email&gt;&quot;;
			if ( &#039;&#039; !== $comment-&gt;comment_author_email ) {
				$reply_to = &quot;Reply-To: \&quot;$comment-&gt;comment_author_email\&quot; &lt;$comment-&gt;comment_author_email&gt;&quot;;
			}
		}

		$message_headers = &quot;$from\n&quot;
		. &#039;Content-Type: text/plain; charset=&quot;&#039; . get_option( &#039;blog_charset&#039; ) . &quot;\&quot;\n&quot;;

		if ( isset( $reply_to ) ) {
			$message_headers .= $reply_to . &quot;\n&quot;;
		}

		/**
		 * Filters the comment notification email headers.
		 *
		 * @since 1.5.2
		 *
		 * @param string $message_headers Headers for the comment notification email.
		 * @param string $comment_id      Comment ID as a numeric string.
		 */
		$message_headers = apply_filters( &#039;comment_notification_headers&#039;, $message_headers, $comment-&gt;comment_ID );

		foreach ( $emails as $email ) {
			$user = get_user_by( &#039;email&#039;, $email );

			if ( $user ) {
				$switched_locale = switch_to_user_locale( $user-&gt;ID );
			} else {
				$switched_locale = switch_to_locale( get_locale() );
			}

			switch ( $comment-&gt;comment_type ) {
				case &#039;trackback&#039;:
					/* translators: %s: Post title. */
					$notify_message = sprintf( __( &#039;New trackback on your post &quot;%s&quot;&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
					$notify_message .= sprintf( __( &#039;Website: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;
					/* translators: %s: Comment text. */
					$notify_message .= sprintf( __( &#039;Comment: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					$notify_message .= __( &#039;You can see all trackbacks on this post here:&#039; ) . &quot;\r\n&quot;;
					/* translators: Trackback notification email subject. 1: Site title, 2: Post title. */
					$subject = sprintf( __( &#039;[%1$s] Trackback: &quot;%2$s&quot;&#039; ), $blogname, $post-&gt;post_title );
					break;

				case &#039;pingback&#039;:
					/* translators: %s: Post title. */
					$notify_message = sprintf( __( &#039;New pingback on your post &quot;%s&quot;&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
					$notify_message .= sprintf( __( &#039;Website: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;
					/* translators: %s: Comment text. */
					$notify_message .= sprintf( __( &#039;Comment: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					$notify_message .= __( &#039;You can see all pingbacks on this post here:&#039; ) . &quot;\r\n&quot;;
					/* translators: Pingback notification email subject. 1: Site title, 2: Post title. */
					$subject = sprintf( __( &#039;[%1$s] Pingback: &quot;%2$s&quot;&#039; ), $blogname, $post-&gt;post_title );
					break;

				case &#039;note&#039;:
					/* translators: %s: Post title. */
					$notify_message = sprintf( __( &#039;New note on your post &quot;%s&quot;&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					/* translators: 1: Note author&#039;s name, 2: Note author&#039;s IP address, 3: Note author&#039;s hostname. */
					$notify_message .= sprintf( __( &#039;Author: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Note author email. */
					$notify_message .= sprintf( __( &#039;Email: %s&#039; ), $comment-&gt;comment_author_email ) . &quot;\r\n&quot;;
					/* translators: %s: Note text. */
					$notify_message .= sprintf( __( &#039;Note: %s&#039; ), &quot;\r\n&quot; . ( empty( $comment_content ) ? __( &#039;resolved/reopened&#039; ) : $comment_content ) ) . &quot;\r\n\r\n&quot;;
					$notify_message .= __( &#039;You can see all notes on this post here:&#039; ) . &quot;\r\n&quot;;
					/* translators: Note notification email subject. 1: Site title, 2: Post title. */
					$subject = sprintf( __( &#039;[%1$s] Note: &quot;%2$s&quot;&#039; ), $blogname, $post-&gt;post_title );
					break;

				default: // Comments.
					/* translators: %s: Post title. */
					$notify_message = sprintf( __( &#039;New comment on your post &quot;%s&quot;&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					/* translators: 1: Comment author&#039;s name, 2: Comment author&#039;s IP address, 3: Comment author&#039;s hostname. */
					$notify_message .= sprintf( __( &#039;Author: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Comment author email. */
					$notify_message .= sprintf( __( &#039;Email: %s&#039; ), $comment-&gt;comment_author_email ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;

					if ( $comment-&gt;comment_parent &amp;&amp; user_can( $post-&gt;post_author, &#039;edit_comment&#039;, $comment-&gt;comment_parent ) ) {
						/* translators: Comment moderation. %s: Parent comment edit URL. */
						$notify_message .= sprintf( __( &#039;In reply to: %s&#039; ), admin_url( &quot;comment.php?action=editcomment&amp;c={$comment-&gt;comment_parent}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
					}

					/* translators: %s: Comment text. */
					$notify_message .= sprintf( __( &#039;Comment: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					$notify_message .= __( &#039;You can see all comments on this post here:&#039; ) . &quot;\r\n&quot;;
					/* translators: Comment notification email subject. 1: Site title, 2: Post title. */
					$subject = sprintf( __( &#039;[%1$s] Comment: &quot;%2$s&quot;&#039; ), $blogname, $post-&gt;post_title );
					break;
			}

			if ( &#039;note&#039; === $comment-&gt;comment_type ) {
				$notify_message .= get_edit_post_link( $comment-&gt;comment_post_ID, &#039;url&#039; ) . &quot;\r\n&quot;;
			} else {
				$notify_message .= get_permalink( $comment-&gt;comment_post_ID ) . &quot;#comments\r\n\r\n&quot;;
				/* translators: %s: Comment URL. */
				$notify_message .= sprintf( __( &#039;Permalink: %s&#039; ), get_comment_link( $comment ) ) . &quot;\r\n&quot;;
			}

			if ( &#039;note&#039; !== $comment-&gt;comment_type &amp;&amp; user_can( $post-&gt;post_author, &#039;edit_comment&#039;, $comment-&gt;comment_ID ) ) {
				if ( EMPTY_TRASH_DAYS ) {
					/* translators: Comment moderation. %s: Comment action URL. */
					$notify_message .= sprintf( __( &#039;Trash it: %s&#039; ), admin_url( &quot;comment.php?action=trash&amp;c={$comment-&gt;comment_ID}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
				} else {
					/* translators: Comment moderation. %s: Comment action URL. */
					$notify_message .= sprintf( __( &#039;Delete it: %s&#039; ), admin_url( &quot;comment.php?action=delete&amp;c={$comment-&gt;comment_ID}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
				}
				/* translators: Comment moderation. %s: Comment action URL. */
				$notify_message .= sprintf( __( &#039;Spam it: %s&#039; ), admin_url( &quot;comment.php?action=spam&amp;c={$comment-&gt;comment_ID}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
			}

			/**
			 * Filters the comment notification email text.
			 *
			 * @since 1.5.2
			 *
			 * @param string $notify_message The comment notification email text.
			 * @param string $comment_id     Comment ID as a numeric string.
			 */
			$notify_message = apply_filters( &#039;comment_notification_text&#039;, $notify_message, $comment-&gt;comment_ID );

			/**
			 * Filters the comment notification email subject.
			 *
			 * @since 1.5.2
			 *
			 * @param string $subject    The comment notification email subject.
			 * @param string $comment_id Comment ID as a numeric string.
			 */
			$subject = apply_filters( &#039;comment_notification_subject&#039;, $subject, $comment-&gt;comment_ID );

			wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers );

			if ( $switched_locale ) {
				restore_previous_locale();
			}
		}

		return true;
	}
endif;

if ( ! function_exists( &#039;wp_notify_moderator&#039; ) ) :
	/**
	 * Notifies the moderator of the site about a new comment that is awaiting approval.
	 *
	 * @since 1.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * Uses the {@see &#039;notify_moderator&#039;} filter to determine whether the site moderator
	 * should be notified, overriding the site setting.
	 *
	 * @param int $comment_id Comment ID.
	 * @return true Always returns true.
	 */
	function wp_notify_moderator( $comment_id ) {
		global $wpdb;

		$maybe_notify = get_option( &#039;moderation_notify&#039; );

		/**
		 * Filters whether to send the site moderator email notifications, overriding the site setting.
		 *
		 * @since 4.4.0
		 *
		 * @param bool $maybe_notify Whether to notify blog moderator.
		 * @param int  $comment_id   The ID of the comment for the notification.
		 */
		$maybe_notify = apply_filters( &#039;notify_moderator&#039;, $maybe_notify, $comment_id );

		if ( ! $maybe_notify ) {
			return true;
		}

		$comment = get_comment( $comment_id );
		$post    = get_post( $comment-&gt;comment_post_ID );
		$user    = get_userdata( $post-&gt;post_author );
		// Send to the administration and to the post author if the author can modify the comment.
		$emails = array( get_option( &#039;admin_email&#039; ) );
		if ( $user &amp;&amp; user_can( $user-&gt;ID, &#039;edit_comment&#039;, $comment_id ) &amp;&amp; ! empty( $user-&gt;user_email ) ) {
			if ( 0 !== strcasecmp( $user-&gt;user_email, get_option( &#039;admin_email&#039; ) ) ) {
				$emails[] = $user-&gt;user_email;
			}
		}

		$comment_author_domain = &#039;&#039;;
		if ( WP_Http::is_ip_address( $comment-&gt;comment_author_IP ) ) {
			$comment_author_domain = gethostbyaddr( $comment-&gt;comment_author_IP );
		}

		$comments_waiting = $wpdb-&gt;get_var( &quot;SELECT COUNT(*) FROM $wpdb-&gt;comments WHERE comment_approved = &#039;0&#039;&quot; );

		/*
		 * The blogname option is escaped with esc_html() on the way into the database in sanitize_option().
		 * We want to reverse this for the plain text arena of emails.
		 */
		$blogname        = wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES );
		$comment_content = wp_specialchars_decode( $comment-&gt;comment_content );

		$message_headers = &#039;&#039;;

		/**
		 * Filters the list of recipients for comment moderation emails.
		 *
		 * @since 3.7.0
		 *
		 * @param string[] $emails     List of email addresses to notify for comment moderation.
		 * @param int      $comment_id Comment ID.
		 */
		$emails = apply_filters( &#039;comment_moderation_recipients&#039;, $emails, $comment_id );

		/**
		 * Filters the comment moderation email headers.
		 *
		 * @since 2.8.0
		 *
		 * @param string $message_headers Headers for the comment moderation email.
		 * @param int    $comment_id      Comment ID.
		 */
		$message_headers = apply_filters( &#039;comment_moderation_headers&#039;, $message_headers, $comment_id );

		foreach ( $emails as $email ) {
			$user = get_user_by( &#039;email&#039;, $email );

			if ( $user ) {
				$switched_locale = switch_to_user_locale( $user-&gt;ID );
			} else {
				$switched_locale = switch_to_locale( get_locale() );
			}

			switch ( $comment-&gt;comment_type ) {
				case &#039;trackback&#039;:
					/* translators: %s: Post title. */
					$notify_message  = sprintf( __( &#039;A new trackback on the post &quot;%s&quot; is waiting for your approval&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					$notify_message .= get_permalink( $comment-&gt;comment_post_ID ) . &quot;\r\n\r\n&quot;;
					/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
					$notify_message .= sprintf( __( &#039;Website: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback excerpt text. */
					$notify_message .= sprintf( __( &#039;Trackback excerpt: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					break;

				case &#039;pingback&#039;:
					/* translators: %s: Post title. */
					$notify_message  = sprintf( __( &#039;A new pingback on the post &quot;%s&quot; is waiting for your approval&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					$notify_message .= get_permalink( $comment-&gt;comment_post_ID ) . &quot;\r\n\r\n&quot;;
					/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
					$notify_message .= sprintf( __( &#039;Website: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;
					/* translators: %s: Pingback excerpt text. */
					$notify_message .= sprintf( __( &#039;Pingback excerpt: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					break;

				default: // Comments.
					/* translators: %s: Post title. */
					$notify_message  = sprintf( __( &#039;A new comment on the post &quot;%s&quot; is waiting for your approval&#039; ), $post-&gt;post_title ) . &quot;\r\n&quot;;
					$notify_message .= get_permalink( $comment-&gt;comment_post_ID ) . &quot;\r\n\r\n&quot;;
					/* translators: 1: Comment author&#039;s name, 2: Comment author&#039;s IP address, 3: Comment author&#039;s hostname. */
					$notify_message .= sprintf( __( &#039;Author: %1$s (IP address: %2$s, %3$s)&#039; ), $comment-&gt;comment_author, $comment-&gt;comment_author_IP, $comment_author_domain ) . &quot;\r\n&quot;;
					/* translators: %s: Comment author email. */
					$notify_message .= sprintf( __( &#039;Email: %s&#039; ), $comment-&gt;comment_author_email ) . &quot;\r\n&quot;;
					/* translators: %s: Trackback/pingback/comment author URL. */
					$notify_message .= sprintf( __( &#039;URL: %s&#039; ), $comment-&gt;comment_author_url ) . &quot;\r\n&quot;;

					if ( $comment-&gt;comment_parent ) {
						/* translators: Comment moderation. %s: Parent comment edit URL. */
						$notify_message .= sprintf( __( &#039;In reply to: %s&#039; ), admin_url( &quot;comment.php?action=editcomment&amp;c={$comment-&gt;comment_parent}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
					}

					/* translators: %s: Comment text. */
					$notify_message .= sprintf( __( &#039;Comment: %s&#039; ), &quot;\r\n&quot; . $comment_content ) . &quot;\r\n\r\n&quot;;
					break;
			}

			/* translators: Comment moderation. %s: Comment action URL. */
			$notify_message .= sprintf( __( &#039;Approve it: %s&#039; ), admin_url( &quot;comment.php?action=approve&amp;c={$comment_id}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;

			if ( EMPTY_TRASH_DAYS ) {
				/* translators: Comment moderation. %s: Comment action URL. */
				$notify_message .= sprintf( __( &#039;Trash it: %s&#039; ), admin_url( &quot;comment.php?action=trash&amp;c={$comment_id}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
			} else {
				/* translators: Comment moderation. %s: Comment action URL. */
				$notify_message .= sprintf( __( &#039;Delete it: %s&#039; ), admin_url( &quot;comment.php?action=delete&amp;c={$comment_id}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;
			}

			/* translators: Comment moderation. %s: Comment action URL. */
			$notify_message .= sprintf( __( &#039;Spam it: %s&#039; ), admin_url( &quot;comment.php?action=spam&amp;c={$comment_id}#wpbody-content&quot; ) ) . &quot;\r\n&quot;;

			$notify_message .= sprintf(
				/* translators: Comment moderation. %s: Number of comments awaiting approval. */
				_n(
					&#039;Currently %s comment is waiting for approval. Please visit the moderation panel:&#039;,
					&#039;Currently %s comments are waiting for approval. Please visit the moderation panel:&#039;,
					$comments_waiting
				),
				number_format_i18n( $comments_waiting )
			) . &quot;\r\n&quot;;
			$notify_message .= admin_url( &#039;edit-comments.php?comment_status=moderated#wpbody-content&#039; ) . &quot;\r\n&quot;;

			/* translators: Comment moderation notification email subject. 1: Site title, 2: Post title. */
			$subject = sprintf( __( &#039;[%1$s] Please moderate: &quot;%2$s&quot;&#039; ), $blogname, $post-&gt;post_title );

			/**
			 * Filters the comment moderation email text.
			 *
			 * @since 1.5.2
			 *
			 * @param string $notify_message Text of the comment moderation email.
			 * @param int    $comment_id     Comment ID.
			 */
			$notify_message = apply_filters( &#039;comment_moderation_text&#039;, $notify_message, $comment_id );

			/**
			 * Filters the comment moderation email subject.
			 *
			 * @since 1.5.2
			 *
			 * @param string $subject    Subject of the comment moderation email.
			 * @param int    $comment_id Comment ID.
			 */
			$subject = apply_filters( &#039;comment_moderation_subject&#039;, $subject, $comment_id );

			wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers );

			if ( $switched_locale ) {
				restore_previous_locale();
			}
		}

		return true;
	}
endif;

if ( ! function_exists( &#039;wp_password_change_notification&#039; ) ) :
	/**
	 * Notifies the blog admin of a user changing password, normally via email.
	 *
	 * @since 2.7.0
	 *
	 * @param WP_User $user User object.
	 */
	function wp_password_change_notification( $user ) {
		/*
		 * Send a copy of password change notification to the admin,
		 * but check to see if it&#039;s the admin whose password we&#039;re changing, and skip this.
		 */
		if ( 0 !== strcasecmp( $user-&gt;user_email, get_option( &#039;admin_email&#039; ) ) ) {

			$admin_user = get_user_by( &#039;email&#039;, get_option( &#039;admin_email&#039; ) );

			if ( $admin_user ) {
				$switched_locale = switch_to_user_locale( $admin_user-&gt;ID );
			} else {
				$switched_locale = switch_to_locale( get_locale() );
			}

			/* translators: %s: User name. */
			$message = sprintf( __( &#039;Password changed for user: %s&#039; ), $user-&gt;user_login ) . &quot;\r\n&quot;;
			/*
			 * The blogname option is escaped with esc_html() on the way into the database in sanitize_option().
			 * We want to reverse this for the plain text arena of emails.
			 */
			$blogname = wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES );

			$wp_password_change_notification_email = array(
				&#039;to&#039;      =&gt; get_option( &#039;admin_email&#039; ),
				/* translators: Password change notification email subject. %s: Site title. */
				&#039;subject&#039; =&gt; __( &#039;[%s] Password Changed&#039; ),
				&#039;message&#039; =&gt; $message,
				&#039;headers&#039; =&gt; &#039;&#039;,
			);

			/**
			 * Filters the contents of the password change notification email sent to the site admin.
			 *
			 * @since 4.9.0
			 *
			 * @param array   $wp_password_change_notification_email {
			 *     Used to build wp_mail().
			 *
			 *     @type string $to      The intended recipient - site admin email address.
			 *     @type string $subject The subject of the email.
			 *     @type string $message The body of the email.
			 *     @type string $headers The headers of the email.
			 * }
			 * @param WP_User $user     User object for user whose password was changed.
			 * @param string  $blogname The site title.
			 */
			$wp_password_change_notification_email = apply_filters( &#039;wp_password_change_notification_email&#039;, $wp_password_change_notification_email, $user, $blogname );

			wp_mail(
				$wp_password_change_notification_email[&#039;to&#039;],
				wp_specialchars_decode( sprintf( $wp_password_change_notification_email[&#039;subject&#039;], $blogname ) ),
				$wp_password_change_notification_email[&#039;message&#039;],
				$wp_password_change_notification_email[&#039;headers&#039;]
			);

			if ( $switched_locale ) {
				restore_previous_locale();
			}
		}
	}
endif;

if ( ! function_exists( &#039;wp_new_user_notification&#039; ) ) :
	/**
	 * Emails login credentials to a newly-registered user.
	 *
	 * A new user registration notification is also sent to admin email.
	 *
	 * @since 2.0.0
	 * @since 4.3.0 The `$plaintext_pass` parameter was changed to `$notify`.
	 * @since 4.3.1 The `$plaintext_pass` parameter was deprecated. `$notify` added as a third parameter.
	 * @since 4.6.0 The `$notify` parameter accepts &#039;user&#039; for sending notification only to the user created.
	 *
	 * @param int    $user_id    User ID.
	 * @param mixed  $deprecated Not used.
	 * @param string $notify     Optional. Type of notification that should happen. Accepts &#039;admin&#039; or an empty
	 *                           string (admin only), &#039;user&#039;, or &#039;both&#039; (admin and user). Default empty.
	 */
	function wp_new_user_notification( $user_id, $deprecated = null, $notify = &#039;&#039; ) {
		if ( null !== $deprecated ) {
			_deprecated_argument( __FUNCTION__, &#039;4.3.1&#039; );
		}

		// Accepts only &#039;user&#039;, &#039;admin&#039; , &#039;both&#039; or default &#039;&#039; as $notify.
		if ( ! in_array( $notify, array( &#039;user&#039;, &#039;admin&#039;, &#039;both&#039;, &#039;&#039; ), true ) ) {
			return;
		}

		$user = get_userdata( $user_id );

		/*
		 * The blogname option is escaped with esc_html() on the way into the database in sanitize_option().
		 * We want to reverse this for the plain text arena of emails.
		 */
		$blogname = wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES );

		/**
		 * Filters whether the admin is notified of a new user registration.
		 *
		 * @since 6.1.0
		 *
		 * @param bool    $send Whether to send the email. Default true.
		 * @param WP_User $user User object for new user.
		 */
		$send_notification_to_admin = apply_filters( &#039;wp_send_new_user_notification_to_admin&#039;, true, $user );

		if ( &#039;user&#039; !== $notify &amp;&amp; true === $send_notification_to_admin ) {

			$admin_user = get_user_by( &#039;email&#039;, get_option( &#039;admin_email&#039; ) );

			if ( $admin_user ) {
				$switched_locale = switch_to_user_locale( $admin_user-&gt;ID );
			} else {
				$switched_locale = switch_to_locale( get_locale() );
			}

			/* translators: %s: Site title. */
			$message = sprintf( __( &#039;New user registration on your site %s:&#039; ), $blogname ) . &quot;\r\n\r\n&quot;;
			/* translators: %s: User login. */
			$message .= sprintf( __( &#039;Username: %s&#039; ), $user-&gt;user_login ) . &quot;\r\n\r\n&quot;;
			/* translators: %s: User email address. */
			$message .= sprintf( __( &#039;Email: %s&#039; ), $user-&gt;user_email ) . &quot;\r\n&quot;;

			$wp_new_user_notification_email_admin = array(
				&#039;to&#039;      =&gt; get_option( &#039;admin_email&#039; ),
				/* translators: New user registration notification email subject. %s: Site title. */
				&#039;subject&#039; =&gt; __( &#039;[%s] New User Registration&#039; ),
				&#039;message&#039; =&gt; $message,
				&#039;headers&#039; =&gt; &#039;&#039;,
			);

			/**
			 * Filters the contents of the new user notification email sent to the site admin.
			 *
			 * @since 4.9.0
			 *
			 * @param array   $wp_new_user_notification_email_admin {
			 *     Used to build wp_mail().
			 *
			 *     @type string $to      The intended recipient - site admin email address.
			 *     @type string $subject The subject of the email.
			 *     @type string $message The body of the email.
			 *     @type string $headers The headers of the email.
			 * }
			 * @param WP_User $user     User object for new user.
			 * @param string  $blogname The site title.
			 */
			$wp_new_user_notification_email_admin = apply_filters( &#039;wp_new_user_notification_email_admin&#039;, $wp_new_user_notification_email_admin, $user, $blogname );

			wp_mail(
				$wp_new_user_notification_email_admin[&#039;to&#039;],
				wp_specialchars_decode( sprintf( $wp_new_user_notification_email_admin[&#039;subject&#039;], $blogname ) ),
				$wp_new_user_notification_email_admin[&#039;message&#039;],
				$wp_new_user_notification_email_admin[&#039;headers&#039;]
			);

			if ( $switched_locale ) {
				restore_previous_locale();
			}
		}

		/**
		 * Filters whether the user is notified of their new user registration.
		 *
		 * @since 6.1.0
		 *
		 * @param bool    $send Whether to send the email. Default true.
		 * @param WP_User $user User object for new user.
		 */
		$send_notification_to_user = apply_filters( &#039;wp_send_new_user_notification_to_user&#039;, true, $user );

		// `$deprecated` was pre-4.3 `$plaintext_pass`. An empty `$plaintext_pass` didn&#039;t sent a user notification.
		if ( &#039;admin&#039; === $notify || true !== $send_notification_to_user || ( empty( $deprecated ) &amp;&amp; empty( $notify ) ) ) {
			return;
		}

		$key = get_password_reset_key( $user );
		if ( is_wp_error( $key ) ) {
			return;
		}

		$switched_locale = switch_to_user_locale( $user_id );

		$message = __( &#039;To set your password, visit the following address:&#039; ) . &quot;\r\n\r\n&quot;;

		/*
		 * Since some user login names end in a period, this could produce ambiguous URLs that
		 * end in a period. To avoid the ambiguity, ensure that the login is not the last query
		 * arg in the URL. If moving it to the end, a trailing period will need to be escaped.
		 *
		 * @see https://core.trac.wordpress.org/tickets/42957
		 */
		$message .= network_site_url( &#039;wp-login.php?login=&#039; . rawurlencode( $user-&gt;user_login ) . &quot;&amp;key=$key&amp;action=rp&quot;, &#039;login&#039; ) . &quot;\r\n&quot;;

		$wp_new_user_notification_email = array(
			&#039;to&#039;      =&gt; $user-&gt;user_email,
			/* translators: Login details notification email subject. %s: Site title. */
			&#039;subject&#039; =&gt; __( &#039;[%s] Login Details&#039; ),
			&#039;message&#039; =&gt; $message,
			&#039;headers&#039; =&gt; &#039;&#039;,
		);

		/**
		 * Filters the contents of the new user notification email sent to the new user.
		 *
		 * @since 4.9.0
		 *
		 * @param array   $wp_new_user_notification_email {
		 *     Used to build wp_mail().
		 *
		 *     @type string $to      The intended recipient - New user email address.
		 *     @type string $subject The subject of the email.
		 *     @type string $message The body of the email.
		 *     @type string $headers The headers of the email.
		 * }
		 * @param WP_User $user     User object for new user.
		 * @param string  $blogname The site title.
		 */
		$wp_new_user_notification_email = apply_filters( &#039;wp_new_user_notification_email&#039;, $wp_new_user_notification_email, $user, $blogname );

		wp_mail(
			$wp_new_user_notification_email[&#039;to&#039;],
			wp_specialchars_decode( sprintf( $wp_new_user_notification_email[&#039;subject&#039;], $blogname ) ),
			$wp_new_user_notification_email[&#039;message&#039;],
			$wp_new_user_notification_email[&#039;headers&#039;]
		);

		if ( $switched_locale ) {
			restore_previous_locale();
		}
	}
endif;

if ( ! function_exists( &#039;wp_nonce_tick&#039; ) ) :
	/**
	 * Returns the time-dependent variable for nonce creation.
	 *
	 * A nonce has a lifespan of two ticks. Nonces in their second tick may be
	 * updated, e.g. by autosave.
	 *
	 * @since 2.5.0
	 * @since 6.1.0 Added `$action` argument.
	 *
	 * @param string|int $action Optional. The nonce action. Default -1.
	 * @return float Float value rounded up to the next highest integer.
	 */
	function wp_nonce_tick( $action = -1 ) {
		/**
		 * Filters the lifespan of nonces in seconds.
		 *
		 * @since 2.5.0
		 * @since 6.1.0 Added `$action` argument to allow for more targeted filters.
		 *
		 * @param int        $lifespan Lifespan of nonces in seconds. Default 86,400 seconds, or one day.
		 * @param string|int $action   The nonce action, or -1 if none was provided.
		 */
		$nonce_life = apply_filters( &#039;nonce_life&#039;, DAY_IN_SECONDS, $action );

		return ceil( time() / ( $nonce_life / 2 ) );
	}
endif;

if ( ! function_exists( &#039;wp_verify_nonce&#039; ) ) :
	/**
	 * Verifies that a correct security nonce was used with time limit.
	 *
	 * A nonce is valid for between 12 and 24 hours (by default).
	 *
	 * @since 2.0.3
	 *
	 * @param string     $nonce  Nonce value that was used for verification, usually via a form field.
	 * @param string|int $action Should give context to what is taking place and be the same when nonce was created.
	 * @return int|false 1 if the nonce is valid and generated between 0-12 hours ago,
	 *                   2 if the nonce is valid and generated between 12-24 hours ago.
	 *                   False if the nonce is invalid.
	 */
	function wp_verify_nonce( $nonce, $action = -1 ) {
		$nonce = (string) $nonce;
		$user  = wp_get_current_user();
		$uid   = (int) $user-&gt;ID;
		if ( ! $uid ) {
			/**
			 * Filters whether the user who generated the nonce is logged out.
			 *
			 * @since 3.5.0
			 *
			 * @param int        $uid    ID of the nonce-owning user.
			 * @param string|int $action The nonce action, or -1 if none was provided.
			 */
			$uid = apply_filters( &#039;nonce_user_logged_out&#039;, $uid, $action );
		}

		if ( empty( $nonce ) ) {
			return false;
		}

		$token = wp_get_session_token();
		$i     = wp_nonce_tick( $action );

		// Nonce generated 0-12 hours ago.
		$expected = substr( wp_hash( $i . &#039;|&#039; . $action . &#039;|&#039; . $uid . &#039;|&#039; . $token, &#039;nonce&#039; ), -12, 10 );
		if ( hash_equals( $expected, $nonce ) ) {
			return 1;
		}

		// Nonce generated 12-24 hours ago.
		$expected = substr( wp_hash( ( $i - 1 ) . &#039;|&#039; . $action . &#039;|&#039; . $uid . &#039;|&#039; . $token, &#039;nonce&#039; ), -12, 10 );
		if ( hash_equals( $expected, $nonce ) ) {
			return 2;
		}

		/**
		 * Fires when nonce verification fails.
		 *
		 * @since 4.4.0
		 *
		 * @param string     $nonce  The invalid nonce.
		 * @param string|int $action The nonce action.
		 * @param WP_User    $user   The current user object.
		 * @param string     $token  The user&#039;s session token.
		 */
		do_action( &#039;wp_verify_nonce_failed&#039;, $nonce, $action, $user, $token );

		// Invalid nonce.
		return false;
	}
endif;

if ( ! function_exists( &#039;wp_create_nonce&#039; ) ) :
	/**
	 * Creates a cryptographic token tied to a specific action, user, user session,
	 * and window of time.
	 *
	 * @since 2.0.3
	 * @since 4.0.0 Session tokens were integrated with nonce creation.
	 *
	 * @param string|int $action Scalar value to add context to the nonce.
	 * @return string The token.
	 */
	function wp_create_nonce( $action = -1 ) {
		$user = wp_get_current_user();
		$uid  = (int) $user-&gt;ID;
		if ( ! $uid ) {
			/** This filter is documented in wp-includes/pluggable.php */
			$uid = apply_filters( &#039;nonce_user_logged_out&#039;, $uid, $action );
		}

		$token = wp_get_session_token();
		$i     = wp_nonce_tick( $action );

		return substr( wp_hash( $i . &#039;|&#039; . $action . &#039;|&#039; . $uid . &#039;|&#039; . $token, &#039;nonce&#039; ), -12, 10 );
	}
endif;

if ( ! function_exists( &#039;wp_salt&#039; ) ) :
	/**
	 * Returns a salt to add to hashes.
	 *
	 * Salts are created using secret keys. Secret keys are located in two places:
	 * in the database and in the wp-config.php file. The secret key in the database
	 * is randomly generated and will be appended to the secret keys in wp-config.php.
	 *
	 * The secret keys in wp-config.php should be updated to strong, random keys to maximize
	 * security. Below is an example of how the secret key constants are defined.
	 * Do not paste this example directly into wp-config.php. Instead, have a
	 * {@link https://api.wordpress.org/secret-key/1.1/salt/ secret key created} just
	 * for you.
	 *
	 *     define(&#039;AUTH_KEY&#039;,         &#039; Xakm&lt;o xQy rw4EMsLKM-?!T+,PFF})H4lzcW57AF0U@N@&lt; &gt;M%G4Yt&gt;f`z]MON&#039;);
	 *     define(&#039;SECURE_AUTH_KEY&#039;,  &#039;LzJ}op]mr|6+![P}Ak:uNdJCJZd&gt;(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~&#039;);
	 *     define(&#039;LOGGED_IN_KEY&#039;,    &#039;|i|Ux`9&lt;p-h$aFf(qnT:sDO:D1P^wZ$$/Ra@miTJi9G;ddp_&lt;q}6H1)o|a +&amp;JCM&#039;);
	 *     define(&#039;NONCE_KEY&#039;,        &#039;%:R{[P|,s.KuMltH5}cI;/k&lt;Gx~j!f0I)m_sIyu+&amp;NJZ)-iO&gt;z7X&gt;QYR0Z_XnZ@|&#039;);
	 *     define(&#039;AUTH_SALT&#039;,        &#039;eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW&#039;);
	 *     define(&#039;SECURE_AUTH_SALT&#039;, &#039;!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W&lt;I`.JjPi)&lt;Bmf1v,HpGe}T1:Xt7n&#039;);
	 *     define(&#039;LOGGED_IN_SALT&#039;,   &#039;+XSqHc;@Q*K_b|Z?NC[3H!!EONbh.n&lt;+=uKR:&gt;*c(u`g~EJBf#8u#R{mUEZrozmm&#039;);
	 *     define(&#039;NONCE_SALT&#039;,       &#039;h`GXHhD&gt;SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&amp;`+AycHcAV$+?@3q+rxV{%^VyKT&#039;);
	 *
	 * Salting passwords helps against tools which has stored hashed values of
	 * common dictionary strings. The added values makes it harder to crack.
	 *
	 * @since 2.5.0
	 *
	 * @link https://api.wordpress.org/secret-key/1.1/salt/ Create secrets for wp-config.php
	 *
	 * @param string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce).
	 * @return string Salt value
	 */
	function wp_salt( $scheme = &#039;auth&#039; ) {
		static $cached_salts = array();
		if ( isset( $cached_salts[ $scheme ] ) ) {
			/**
			 * Filters the WordPress salt.
			 *
			 * @since 2.5.0
			 *
			 * @param string $cached_salt Cached salt for the given scheme.
			 * @param string $scheme      Authentication scheme. Values include &#039;auth&#039;,
			 *                            &#039;secure_auth&#039;, &#039;logged_in&#039;, and &#039;nonce&#039;.
			 */
			return apply_filters( &#039;salt&#039;, $cached_salts[ $scheme ], $scheme );
		}

		static $duplicated_keys;
		if ( null === $duplicated_keys ) {
			$duplicated_keys = array();

			foreach ( array( &#039;AUTH&#039;, &#039;SECURE_AUTH&#039;, &#039;LOGGED_IN&#039;, &#039;NONCE&#039;, &#039;SECRET&#039; ) as $first ) {
				foreach ( array( &#039;KEY&#039;, &#039;SALT&#039; ) as $second ) {
					if ( ! defined( &quot;{$first}_{$second}&quot; ) ) {
						continue;
					}
					$value                     = constant( &quot;{$first}_{$second}&quot; );
					$duplicated_keys[ $value ] = isset( $duplicated_keys[ $value ] );
				}
			}

			$duplicated_keys[&#039;put your unique phrase here&#039;] = true;

			/*
			 * translators: This string should only be translated if wp-config-sample.php is localized.
			 * You can check the localized release package or
			 * https://i18n.svn.wordpress.org/&lt;locale code&gt;/branches/&lt;wp version&gt;/dist/wp-config-sample.php
			 */
			$duplicated_keys[ __( &#039;put your unique phrase here&#039; ) ] = true;
		}

		/*
		 * Determine which options to prime.
		 *
		 * If the salt keys are undefined, use a duplicate value or the
		 * default `put your unique phrase here` value the salt will be
		 * generated via `wp_generate_password()` and stored as a site
		 * option. These options will be primed to avoid repeated
		 * database requests for undefined salts.
		 */
		$options_to_prime = array();
		foreach ( array( &#039;auth&#039;, &#039;secure_auth&#039;, &#039;logged_in&#039;, &#039;nonce&#039; ) as $key ) {
			foreach ( array( &#039;key&#039;, &#039;salt&#039; ) as $second ) {
				$const = strtoupper( &quot;{$key}_{$second}&quot; );
				if ( ! defined( $const ) || true === $duplicated_keys[ constant( $const ) ] ) {
					$options_to_prime[] = &quot;{$key}_{$second}&quot;;
				}
			}
		}

		if ( ! empty( $options_to_prime ) ) {
			/*
			 * Also prime `secret_key` used for undefined salting schemes.
			 *
			 * If the scheme is unknown, the default value for `secret_key` will be
			 * used too for the salt. This should rarely happen, so the option is only
			 * primed if other salts are undefined.
			 *
			 * At this point of execution it is known that a database call will be made
			 * to prime salts, so the `secret_key` option can be primed regardless of the
			 * constants status.
			 */
			$options_to_prime[] = &#039;secret_key&#039;;
			wp_prime_site_option_caches( $options_to_prime );
		}

		$values = array(
			&#039;key&#039;  =&gt; &#039;&#039;,
			&#039;salt&#039; =&gt; &#039;&#039;,
		);
		if ( defined( &#039;SECRET_KEY&#039; ) &amp;&amp; SECRET_KEY &amp;&amp; empty( $duplicated_keys[ SECRET_KEY ] ) ) {
			$values[&#039;key&#039;] = SECRET_KEY;
		}
		if ( &#039;auth&#039; === $scheme &amp;&amp; defined( &#039;SECRET_SALT&#039; ) &amp;&amp; SECRET_SALT &amp;&amp; empty( $duplicated_keys[ SECRET_SALT ] ) ) {
			$values[&#039;salt&#039;] = SECRET_SALT;
		}

		if ( in_array( $scheme, array( &#039;auth&#039;, &#039;secure_auth&#039;, &#039;logged_in&#039;, &#039;nonce&#039; ), true ) ) {
			foreach ( array( &#039;key&#039;, &#039;salt&#039; ) as $type ) {
				$const = strtoupper( &quot;{$scheme}_{$type}&quot; );
				if ( defined( $const ) &amp;&amp; constant( $const ) &amp;&amp; empty( $duplicated_keys[ constant( $const ) ] ) ) {
					$values[ $type ] = constant( $const );
				} elseif ( ! $values[ $type ] ) {
					$values[ $type ] = get_site_option( &quot;{$scheme}_{$type}&quot; );
					if ( ! $values[ $type ] ) {
						$values[ $type ] = wp_generate_password( 64, true, true );
						update_site_option( &quot;{$scheme}_{$type}&quot;, $values[ $type ] );
					}
				}
			}
		} else {
			if ( ! $values[&#039;key&#039;] ) {
				$values[&#039;key&#039;] = get_site_option( &#039;secret_key&#039; );
				if ( ! $values[&#039;key&#039;] ) {
					$values[&#039;key&#039;] = wp_generate_password( 64, true, true );
					update_site_option( &#039;secret_key&#039;, $values[&#039;key&#039;] );
				}
			}
			$values[&#039;salt&#039;] = hash_hmac( &#039;md5&#039;, $scheme, $values[&#039;key&#039;] );
		}

		$cached_salts[ $scheme ] = $values[&#039;key&#039;] . $values[&#039;salt&#039;];

		/** This filter is documented in wp-includes/pluggable.php */
		return apply_filters( &#039;salt&#039;, $cached_salts[ $scheme ], $scheme );
	}
endif;

if ( ! function_exists( &#039;wp_hash&#039; ) ) :
	/**
	 * Gets the hash of the given string.
	 *
	 * The default algorithm is md5 but can be changed to any algorithm supported by
	 * `hash_hmac()`. Use the `hash_hmac_algos()` function to check the supported
	 * algorithms.
	 *
	 * @since 2.0.3
	 * @since 6.8.0 The `$algo` parameter was added.
	 *
	 * @throws InvalidArgumentException if the hashing algorithm is not supported.
	 *
	 * @param string $data   Plain text to hash.
	 * @param string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce).
	 * @param string $algo   Hashing algorithm to use. Default: &#039;md5&#039;.
	 * @return string Hash of $data.
	 */
	function wp_hash( $data, $scheme = &#039;auth&#039;, $algo = &#039;md5&#039; ) {
		$salt = wp_salt( $scheme );

		// Ensure the algorithm is supported by the hash_hmac function.
		if ( ! in_array( $algo, hash_hmac_algos(), true ) ) {
			throw new InvalidArgumentException(
				sprintf(
					/* translators: 1: Name of a cryptographic hash algorithm. 2: List of supported algorithms. */
					__( &#039;Unsupported hashing algorithm: %1$s. Supported algorithms are: %2$s&#039; ),
					$algo,
					implode( &#039;, &#039;, hash_hmac_algos() )
				)
			);
		}

		return hash_hmac( $algo, $data, $salt );
	}
endif;

if ( ! function_exists( &#039;wp_hash_password&#039; ) ) :
	/**
	 * Creates a hash of a plain text password.
	 *
	 * For integration with other applications, this function can be overwritten to
	 * instead use the other package password hashing algorithm.
	 *
	 * @since 2.5.0
	 * @since 6.8.0 The password is now hashed using bcrypt by default instead of phpass.
	 *
	 * @global PasswordHash $wp_hasher phpass object.
	 *
	 * @param string $password Plain text user password to hash.
	 * @return string The hash string of the password.
	 */
	function wp_hash_password(
		#[\SensitiveParameter]
		$password
	) {
		global $wp_hasher;

		if ( ! empty( $wp_hasher ) ) {
			return $wp_hasher-&gt;HashPassword( trim( $password ) );
		}

		if ( strlen( $password ) &gt; 4096 ) {
			return &#039;*&#039;;
		}

		/**
		 * Filters the hashing algorithm to use in the password_hash() and password_needs_rehash() functions.
		 *
		 * The default is the value of the `PASSWORD_BCRYPT` constant which means bcrypt is used.
		 *
		 * **Important:** The only password hashing algorithm that is guaranteed to be available across PHP
		 * installations is bcrypt. If you use any other algorithm you must make sure that it is available on
		 * the server. The `password_algos()` function can be used to check which hashing algorithms are available.
		 *
		 * The hashing options can be controlled via the {@see &#039;wp_hash_password_options&#039;} filter.
		 *
		 * Other available constants include:
		 *
		 * - `PASSWORD_ARGON2I`
		 * - `PASSWORD_ARGON2ID`
		 * - `PASSWORD_DEFAULT`
		 *
		 * @since 6.8.0
		 * @since 7.0.0 The `$algorithm` parameter is now always a string.
		 *
		 * @param string $algorithm The hashing algorithm. Default is the value of the `PASSWORD_BCRYPT` constant.
		 */
		$algorithm = apply_filters( &#039;wp_hash_password_algorithm&#039;, PASSWORD_BCRYPT );

		/**
		 * Filters the options passed to the password_hash() and password_needs_rehash() functions.
		 *
		 * The default hashing algorithm is bcrypt, but this can be changed via the {@see &#039;wp_hash_password_algorithm&#039;}
		 * filter. You must ensure that the options are appropriate for the algorithm in use.
		 *
		 * @since 6.8.0
		 * @since 7.0.0 The `$algorithm` parameter is now always a string.
		 *
		 * @param array  $options   Array of options to pass to the password hashing functions.
		 *                          By default this is an empty array which means the default
		 *                          options will be used.
		 * @param string $algorithm The hashing algorithm in use.
		 */
		$options = apply_filters( &#039;wp_hash_password_options&#039;, array(), $algorithm );

		// Algorithms other than bcrypt don&#039;t need to use pre-hashing.
		if ( PASSWORD_BCRYPT !== $algorithm ) {
			return password_hash( $password, $algorithm, $options );
		}

		// Use SHA-384 to retain entropy from a password that&#039;s longer than 72 bytes, and a `wp-sha384` key for domain separation.
		$password_to_hash = base64_encode( hash_hmac( &#039;sha384&#039;, trim( $password ), &#039;wp-sha384&#039;, true ) );

		// Add a prefix to facilitate distinguishing vanilla bcrypt hashes.
		return &#039;$wp&#039; . password_hash( $password_to_hash, $algorithm, $options );
	}
endif;

if ( ! function_exists( &#039;wp_check_password&#039; ) ) :
	/**
	 * Checks a plaintext password against a hashed password.
	 *
	 * Note that this function may be used to check a value that is not a user password.
	 * A plugin may use this function to check a password of a different type, and there
	 * may not always be a user ID associated with the password.
	 *
	 * For integration with other applications, this function can be overwritten to
	 * instead use the other package password hashing algorithm.
	 *
	 * @since 2.5.0
	 * @since 6.8.0 Passwords in WordPress are now hashed with bcrypt by default. A
	 *              password that wasn&#039;t hashed with bcrypt will be checked with phpass.
	 *
	 * @global PasswordHash $wp_hasher phpass object. Used as a fallback for verifying
	 *                                 passwords that were hashed with phpass.
	 *
	 * @param string     $password Plaintext password.
	 * @param string     $hash     Hash of the password to check against.
	 * @param string|int $user_id  Optional. ID of a user associated with the password.
	 * @return bool False, if the $password does not match the hashed password.
	 */
	function wp_check_password(
		#[\SensitiveParameter]
		$password,
		$hash,
		$user_id = &#039;&#039;
	) {
		global $wp_hasher;

		if ( strlen( $hash ) &lt;= 32 ) {
			// Check the hash using md5 regardless of the current hashing mechanism.
			$check = hash_equals( $hash, md5( $password ) );
		} elseif ( ! empty( $wp_hasher ) ) {
			// Check the password using the overridden hasher.
			$check = $wp_hasher-&gt;CheckPassword( $password, $hash );
		} elseif ( strlen( $password ) &gt; 4096 ) {
			// Passwords longer than 4096 characters are not supported.
			$check = false;
		} elseif ( str_starts_with( $hash, &#039;$wp&#039; ) ) {
			// Check the password using the current prefixed hash.
			$password_to_verify = base64_encode( hash_hmac( &#039;sha384&#039;, $password, &#039;wp-sha384&#039;, true ) );
			$check              = password_verify( $password_to_verify, substr( $hash, 3 ) );
		} elseif ( str_starts_with( $hash, &#039;$P$&#039; ) ) {
			// Check the password using phpass.
			require_once ABSPATH . WPINC . &#039;/class-phpass.php&#039;;
			$check = ( new PasswordHash( 8, true ) )-&gt;CheckPassword( $password, $hash );
		} else {
			// Check the password using compat support for any non-prefixed hash.
			$check = password_verify( $password, $hash );
		}

		/**
		 * Filters whether the plaintext password matches the hashed password.
		 *
		 * @since 2.5.0
		 * @since 6.8.0 Passwords are now hashed with bcrypt by default.
		 *              Old passwords may still be hashed with phpass or md5.
		 *
		 * @param bool       $check    Whether the passwords match.
		 * @param string     $password The plaintext password.
		 * @param string     $hash     The hashed password.
		 * @param string|int $user_id  Optional ID of a user associated with the password.
		 *                             Can be empty.
		 */
		return apply_filters( &#039;check_password&#039;, $check, $password, $hash, $user_id );
	}
endif;

if ( ! function_exists( &#039;wp_password_needs_rehash&#039; ) ) :
	/**
	 * Checks whether a password hash needs to be rehashed.
	 *
	 * Passwords are hashed with bcrypt using the default cost. A password hashed in a prior version
	 * of WordPress may still be hashed with phpass and will need to be rehashed. If the default cost
	 * or algorithm is changed in PHP or WordPress then a password hashed in a previous version will
	 * need to be rehashed.
	 *
	 * Note that, just like wp_check_password(), this function may be used to check a value that is
	 * not a user password. A plugin may use this function to check a password of a different type,
	 * and there may not always be a user ID associated with the password.
	 *
	 * @since 6.8.0
	 *
	 * @global PasswordHash $wp_hasher phpass object.
	 *
	 * @param string     $hash    Hash of a password to check.
	 * @param string|int $user_id Optional. ID of a user associated with the password.
	 * @return bool Whether the hash needs to be rehashed.
	 */
	function wp_password_needs_rehash( $hash, $user_id = &#039;&#039; ) {
		global $wp_hasher;

		if ( ! empty( $wp_hasher ) ) {
			return false;
		}

		/** This filter is documented in wp-includes/pluggable.php */
		$algorithm = apply_filters( &#039;wp_hash_password_algorithm&#039;, PASSWORD_BCRYPT );

		/** This filter is documented in wp-includes/pluggable.php */
		$options = apply_filters( &#039;wp_hash_password_options&#039;, array(), $algorithm );

		$prefixed = str_starts_with( $hash, &#039;$wp&#039; );

		if ( ( PASSWORD_BCRYPT === $algorithm ) &amp;&amp; ! $prefixed ) {
			// If bcrypt is in use and the hash is not prefixed then it needs to be rehashed.
			$needs_rehash = true;
		} else {
			// Otherwise check the hash minus its prefix if necessary.
			$hash_to_check = $prefixed ? substr( $hash, 3 ) : $hash;
			$needs_rehash  = password_needs_rehash( $hash_to_check, $algorithm, $options );
		}

		/**
		 * Filters whether the password hash needs to be rehashed.
		 *
		 * @since 6.8.0
		 *
		 * @param bool       $needs_rehash Whether the password hash needs to be rehashed.
		 * @param string     $hash         The password hash.
		 * @param string|int $user_id      Optional. ID of a user associated with the password.
		 */
		return apply_filters( &#039;password_needs_rehash&#039;, $needs_rehash, $hash, $user_id );
	}
endif;

if ( ! function_exists( &#039;wp_generate_password&#039; ) ) :
	/**
	 * Generates a random password drawn from the defined set of characters.
	 *
	 * Uses wp_rand() to create passwords with far less predictability
	 * than similar native PHP functions like `rand()` or `mt_rand()`.
	 *
	 * @since 2.5.0
	 *
	 * @param int  $length              Optional. The length of password to generate. Default 12.
	 * @param bool $special_chars       Optional. Whether to include standard special characters.
	 *                                  Default true.
	 * @param bool $extra_special_chars Optional. Whether to include other special characters.
	 *                                  Used when generating secret keys and salts. Default false.
	 * @return string The random password.
	 */
	function wp_generate_password( $length = 12, $special_chars = true, $extra_special_chars = false ) {
		$chars = &#039;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#039;;
		if ( $special_chars ) {
			$chars .= &#039;!@#$%^&amp;*()&#039;;
		}
		if ( $extra_special_chars ) {
			$chars .= &#039;-_ []{}&lt;&gt;~`+=,.;:/?|&#039;;
		}

		$password = &#039;&#039;;
		for ( $i = 0; $i &lt; $length; $i++ ) {
			$password .= substr( $chars, wp_rand( 0, strlen( $chars ) - 1 ), 1 );
		}

		/**
		 * Filters the randomly-generated password.
		 *
		 * @since 3.0.0
		 * @since 5.3.0 Added the `$length`, `$special_chars`, and `$extra_special_chars` parameters.
		 *
		 * @param string $password            The generated password.
		 * @param int    $length              The length of password to generate.
		 * @param bool   $special_chars       Whether to include standard special characters.
		 * @param bool   $extra_special_chars Whether to include other special characters.
		 */
		return apply_filters( &#039;random_password&#039;, $password, $length, $special_chars, $extra_special_chars );
	}
endif;

if ( ! function_exists( &#039;wp_rand&#039; ) ) :
	/**
	 * Generates a random non-negative number.
	 *
	 * @since 2.6.2
	 * @since 4.4.0 Uses PHP7 random_int() or the random_compat library if available.
	 * @since 6.1.0 Returns zero instead of a random number if both `$min` and `$max` are zero.
	 *
	 * @global string $rnd_value
	 *
	 * @param int $min Optional. Lower limit for the generated number.
	 *                 Accepts positive integers or zero. Defaults to 0.
	 * @param int $max Optional. Upper limit for the generated number.
	 *                 Accepts positive integers. Defaults to 4294967295.
	 * @return int A random non-negative number between min and max.
	 */
	function wp_rand( $min = null, $max = null ) {
		global $rnd_value;

		/*
		 * Some misconfigured 32-bit environments (Entropy PHP, for example)
		 * truncate integers larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats.
		 */
		$max_random_number = 3000000000 === 2147483647 ? (float) &#039;4294967295&#039; : 4294967295; // 4294967295 = 0xffffffff

		if ( null === $min ) {
			$min = 0;
		}

		if ( null === $max ) {
			$max = $max_random_number;
		}

		// We only handle ints, floats are truncated to their integer value.
		$min = (int) $min;
		$max = (int) $max;

		// Use PHP&#039;s CSPRNG, or a compatible method.
		static $use_random_int_functionality = true;
		if ( $use_random_int_functionality ) {
			try {
				// wp_rand() can accept arguments in either order, PHP cannot.
				$_max = max( $min, $max );
				$_min = min( $min, $max );
				$val  = random_int( $_min, $_max );
				if ( false !== $val ) {
					return absint( $val );
				} else {
					$use_random_int_functionality = false;
				}
			} catch ( Error $e ) {
				$use_random_int_functionality = false;
			} catch ( Exception $e ) {
				$use_random_int_functionality = false;
			}
		}

		/*
		 * Reset $rnd_value after 14 uses.
		 * 32 (md5) + 40 (sha1) + 40 (sha1) / 8 = 14 random numbers from $rnd_value.
		 */
		if ( strlen( $rnd_value ) &lt; 8 ) {
			if ( defined( &#039;WP_SETUP_CONFIG&#039; ) ) {
				static $seed = &#039;&#039;;
			} else {
				$seed = get_transient( &#039;random_seed&#039; );
			}
			$rnd_value  = md5( uniqid( microtime() . mt_rand(), true ) . $seed );
			$rnd_value .= sha1( $rnd_value );
			$rnd_value .= sha1( $rnd_value . $seed );
			$seed       = md5( $seed . $rnd_value );
			if ( ! defined( &#039;WP_SETUP_CONFIG&#039; ) &amp;&amp; ! defined( &#039;WP_INSTALLING&#039; ) ) {
				set_transient( &#039;random_seed&#039;, $seed );
			}
		}

		// Take the first 8 digits for our value.
		$value = substr( $rnd_value, 0, 8 );

		// Strip the first eight, leaving the remainder for the next call to wp_rand().
		$rnd_value = substr( $rnd_value, 8 );

		$value = abs( hexdec( $value ) );

		// Reduce the value to be within the min - max range.
		$value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );

		return abs( (int) $value );
	}
endif;

if ( ! function_exists( &#039;wp_set_password&#039; ) ) :
	/**
	 * Updates the user&#039;s password with a new hashed one.
	 *
	 * For integration with other applications, this function can be overwritten to
	 * instead use the other package password checking algorithm.
	 *
	 * Please note: This function should be used sparingly and is really only meant for single-time
	 * application. Leveraging this improperly in a plugin or theme could result in an endless loop
	 * of password resets if precautions are not taken to ensure it does not execute on every page load.
	 *
	 * @since 2.5.0
	 * @since 6.8.0 The password is now hashed using bcrypt by default instead of phpass.
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string $password The plaintext new user password.
	 * @param int    $user_id  User ID.
	 */
	function wp_set_password(
		#[\SensitiveParameter]
		$password,
		$user_id
	) {
		global $wpdb;

		$old_user_data = get_userdata( $user_id );

		$hash = wp_hash_password( $password );
		$wpdb-&gt;update(
			$wpdb-&gt;users,
			array(
				&#039;user_pass&#039;           =&gt; $hash,
				&#039;user_activation_key&#039; =&gt; &#039;&#039;,
			),
			array( &#039;ID&#039; =&gt; $user_id )
		);

		clean_user_cache( $user_id );

		/**
		 * Fires after the user password is set.
		 *
		 * @since 6.2.0
		 * @since 6.7.0 The `$old_user_data` parameter was added.
		 *
		 * @param string  $password      The plaintext password just set.
		 * @param int     $user_id       The ID of the user whose password was just set.
		 * @param WP_User $old_user_data Object containing user&#039;s data prior to update.
		 */
		do_action( &#039;wp_set_password&#039;, $password, $user_id, $old_user_data );
	}
endif;

if ( ! function_exists( &#039;get_avatar&#039; ) ) :
	/**
	 * Retrieves the avatar `&lt;img&gt;` tag for a user, email address, MD5 hash, comment, or post.
	 *
	 * @since 2.5.0
	 * @since 4.2.0 Added the optional `$args` parameter.
	 * @since 5.5.0 Added the `loading` argument.
	 * @since 6.1.0 Added the `decoding` argument.
	 * @since 6.3.0 Added the `fetchpriority` argument.
	 *
	 * @param mixed  $id_or_email   The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
	 *                              user email, WP_User object, WP_Post object, or WP_Comment object.
	 * @param int    $size          Optional. Height and width of the avatar in pixels. Default 96.
	 * @param string $default_value URL for the default image or a default type. Accepts:
	 *                              - &#039;404&#039; (return a 404 instead of a default image)
	 *                              - &#039;retro&#039; (a 8-bit arcade-style pixelated face)
	 *                              - &#039;robohash&#039; (a robot)
	 *                              - &#039;monsterid&#039; (a monster)
	 *                              - &#039;wavatar&#039; (a cartoon face)
	 *                              - &#039;identicon&#039; (the &quot;quilt&quot;, a geometric pattern)
	 *                              - &#039;initials&#039; (initials based avatar with background color)
	 *                              - &#039;color&#039; (generated background color)
	 *                              - &#039;mystery&#039;, &#039;mm&#039;, or &#039;mysteryman&#039; (The Oyster Man)
	 *                              - &#039;blank&#039; (transparent GIF)
	 *                              - &#039;gravatar_default&#039; (the Gravatar logo)
	 *                              Default is the value of the &#039;avatar_default&#039; option,
	 *                              with a fallback of &#039;mystery&#039;.
	 * @param string $alt           Optional. Alternative text to use in the avatar image tag.
	 *                              Default empty.
	 * @param array  $args {
	 *     Optional. Extra arguments to retrieve the avatar.
	 *
	 *     @type int          $height        Display height of the avatar in pixels. Defaults to $size.
	 *     @type int          $width         Display width of the avatar in pixels. Defaults to $size.
	 *     @type bool         $force_default Whether to always show the default image, never the Gravatar.
	 *                                       Default false.
	 *     @type string       $rating        What rating to display avatars up to. Accepts:
	 *                                       - &#039;G&#039; (suitable for all audiences)
	 *                                       - &#039;PG&#039; (possibly offensive, usually for audiences 13 and above)
	 *                                       - &#039;R&#039; (intended for adult audiences above 17)
	 *                                       - &#039;X&#039; (even more mature than above)
	 *                                       Default is the value of the &#039;avatar_rating&#039; option.
	 *     @type string       $scheme        URL scheme to use. See set_url_scheme() for accepted values.
	 *                                       Default null.
	 *     @type array|string $class         Array or string of additional classes to add to the img element.
	 *                                       Default null.
	 *     @type bool         $force_display Whether to always show the avatar - ignores the show_avatars option.
	 *                                       Default false.
	 *     @type string       $loading       Value for the `loading` attribute.
	 *                                       Default null.
	 *     @type string       $fetchpriority Value for the `fetchpriority` attribute.
	 *                                       Default null.
	 *     @type string       $decoding      Value for the `decoding` attribute.
	 *                                       Default null.
	 *     @type string       $extra_attr    HTML attributes to insert in the IMG element. Is not sanitized.
	 *                                       Default empty.
	 * }
	 * @return string|false `&lt;img&gt;` tag for the user&#039;s avatar. False on failure.
	 */
	function get_avatar( $id_or_email, $size = 96, $default_value = &#039;&#039;, $alt = &#039;&#039;, $args = null ) {
		$defaults = array(
			// get_avatar_data() args.
			&#039;size&#039;          =&gt; 96,
			&#039;height&#039;        =&gt; null,
			&#039;width&#039;         =&gt; null,
			&#039;default&#039;       =&gt; get_option( &#039;avatar_default&#039;, &#039;mystery&#039; ),
			&#039;force_default&#039; =&gt; false,
			&#039;rating&#039;        =&gt; get_option( &#039;avatar_rating&#039; ),
			&#039;scheme&#039;        =&gt; null,
			&#039;alt&#039;           =&gt; &#039;&#039;,
			&#039;class&#039;         =&gt; null,
			&#039;force_display&#039; =&gt; false,
			&#039;loading&#039;       =&gt; null,
			&#039;fetchpriority&#039; =&gt; null,
			&#039;decoding&#039;      =&gt; null,
			&#039;extra_attr&#039;    =&gt; &#039;&#039;,
		);

		if ( empty( $args ) ) {
			$args = array();
		}

		$args[&#039;size&#039;]    = (int) $size;
		$args[&#039;default&#039;] = $default_value;
		$args[&#039;alt&#039;]     = $alt;

		$args = wp_parse_args( $args, $defaults );

		if ( empty( $args[&#039;height&#039;] ) ) {
			$args[&#039;height&#039;] = $args[&#039;size&#039;];
		}
		if ( empty( $args[&#039;width&#039;] ) ) {
			$args[&#039;width&#039;] = $args[&#039;size&#039;];
		}

		// Update args with loading optimized attributes.
		$loading_optimization_attr = wp_get_loading_optimization_attributes( &#039;img&#039;, $args, &#039;get_avatar&#039; );

		$args = array_merge( $args, $loading_optimization_attr );

		if ( is_object( $id_or_email ) &amp;&amp; isset( $id_or_email-&gt;comment_ID ) ) {
			$id_or_email = get_comment( $id_or_email );
		}

		/**
		 * Allows the HTML for a user&#039;s avatar to be returned early.
		 *
		 * Returning a non-null value will effectively short-circuit get_avatar(), passing
		 * the value through the {@see &#039;get_avatar&#039;} filter and returning early.
		 *
		 * @since 4.2.0
		 *
		 * @param string|null $avatar      HTML for the user&#039;s avatar. Default null.
		 * @param mixed       $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
		 *                                 user email, WP_User object, WP_Post object, or WP_Comment object.
		 * @param array       $args        Arguments passed to get_avatar_url(), after processing.
		 */
		$avatar = apply_filters( &#039;pre_get_avatar&#039;, null, $id_or_email, $args );

		if ( ! is_null( $avatar ) ) {
			/** This filter is documented in wp-includes/pluggable.php */
			return apply_filters( &#039;get_avatar&#039;, $avatar, $id_or_email, $args[&#039;size&#039;], $args[&#039;default&#039;], $args[&#039;alt&#039;], $args );
		}

		if ( ! $args[&#039;force_display&#039;] &amp;&amp; ! get_option( &#039;show_avatars&#039; ) ) {
			return false;
		}

		$url2x = get_avatar_url( $id_or_email, array_merge( $args, array( &#039;size&#039; =&gt; $args[&#039;size&#039;] * 2 ) ) );

		$args = get_avatar_data( $id_or_email, $args );

		$url = $args[&#039;url&#039;];

		if ( ! $url || is_wp_error( $url ) ) {
			return false;
		}

		$class = array( &#039;avatar&#039;, &#039;avatar-&#039; . (int) $args[&#039;size&#039;], &#039;photo&#039; );

		if ( ! $args[&#039;found_avatar&#039;] || $args[&#039;force_default&#039;] ) {
			$class[] = &#039;avatar-default&#039;;
		}

		if ( $args[&#039;class&#039;] ) {
			if ( is_array( $args[&#039;class&#039;] ) ) {
				$class = array_merge( $class, $args[&#039;class&#039;] );
			} else {
				$class[] = $args[&#039;class&#039;];
			}
		}

		// Add `loading`, `fetchpriority`, and `decoding` attributes.
		$extra_attr = $args[&#039;extra_attr&#039;];

		if ( in_array( $args[&#039;loading&#039;], array( &#039;lazy&#039;, &#039;eager&#039; ), true )
			&amp;&amp; ! preg_match( &#039;/\bloading\s*=/&#039;, $extra_attr )
		) {
			if ( ! empty( $extra_attr ) ) {
				$extra_attr .= &#039; &#039;;
			}

			$extra_attr .= &quot;loading=&#039;{$args[&#039;loading&#039;]}&#039;&quot;;
		}

		if ( in_array( $args[&#039;fetchpriority&#039;], array( &#039;high&#039;, &#039;low&#039;, &#039;auto&#039; ), true )
			&amp;&amp; ! preg_match( &#039;/\bfetchpriority\s*=/&#039;, $extra_attr )
		) {
			if ( ! empty( $extra_attr ) ) {
				$extra_attr .= &#039; &#039;;
			}

			$extra_attr .= &quot;fetchpriority=&#039;{$args[&#039;fetchpriority&#039;]}&#039;&quot;;
		}

		if ( in_array( $args[&#039;decoding&#039;], array( &#039;async&#039;, &#039;sync&#039;, &#039;auto&#039; ), true )
			&amp;&amp; ! preg_match( &#039;/\bdecoding\s*=/&#039;, $extra_attr )
		) {
			if ( ! empty( $extra_attr ) ) {
				$extra_attr .= &#039; &#039;;
			}

			$extra_attr .= &quot;decoding=&#039;{$args[&#039;decoding&#039;]}&#039;&quot;;
		}

		$avatar = sprintf(
			&quot;&lt;img alt=&#039;%s&#039; src=&#039;%s&#039; srcset=&#039;%s&#039; class=&#039;%s&#039; height=&#039;%d&#039; width=&#039;%d&#039; %s/&gt;&quot;,
			esc_attr( $args[&#039;alt&#039;] ),
			esc_url( $url ),
			esc_url( $url2x ) . &#039; 2x&#039;,
			esc_attr( implode( &#039; &#039;, $class ) ),
			(int) $args[&#039;height&#039;],
			(int) $args[&#039;width&#039;],
			$extra_attr
		);

		/**
		 * Filters the HTML for a user&#039;s avatar.
		 *
		 * @since 2.5.0
		 * @since 4.2.0 Added the `$args` parameter.
		 *
		 * @param string $avatar        HTML for the user&#039;s avatar.
		 * @param mixed  $id_or_email   The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
		 *                              user email, WP_User object, WP_Post object, or WP_Comment object.
		 * @param int    $size          Height and width of the avatar in pixels.
		 * @param string $default_value URL for the default image or a default type. Accepts:
		 *                              - &#039;404&#039; (return a 404 instead of a default image)
		 *                              - &#039;retro&#039; (a 8-bit arcade-style pixelated face)
		 *                              - &#039;robohash&#039; (a robot)
		 *                              - &#039;monsterid&#039; (a monster)
		 *                              - &#039;wavatar&#039; (a cartoon face)
		 *                              - &#039;identicon&#039; (the &quot;quilt&quot;, a geometric pattern)
		 *                              - &#039;mystery&#039;, &#039;mm&#039;, or &#039;mysteryman&#039; (The Oyster Man)
		 *                              - &#039;blank&#039; (transparent GIF)
		 *                              - &#039;gravatar_default&#039; (the Gravatar logo)
		 * @param string $alt           Alternative text to use in the avatar image tag.
		 * @param array  $args          Arguments passed to get_avatar_data(), after processing.
		 */
		return apply_filters( &#039;get_avatar&#039;, $avatar, $id_or_email, $args[&#039;size&#039;], $args[&#039;default&#039;], $args[&#039;alt&#039;], $args );
	}
endif;

if ( ! function_exists( &#039;wp_text_diff&#039; ) ) :
	/**
	 * Displays a human readable HTML representation of the difference between two strings.
	 *
	 * The Diff is available for getting the changes between versions. The output is
	 * HTML, so the primary use is for displaying the changes. If the two strings
	 * are equivalent, then an empty string will be returned.
	 *
	 * @since 2.6.0
	 *
	 * @see wp_parse_args() Used to change defaults to user defined settings.
	 * @uses Text_Diff
	 * @uses WP_Text_Diff_Renderer_Table
	 *
	 * @param string       $left_string  &quot;old&quot; (left) version of string.
	 * @param string       $right_string &quot;new&quot; (right) version of string.
	 * @param string|array $args {
	 *     Associative array of options to pass to WP_Text_Diff_Renderer_Table().
	 *
	 *     @type string $title           Titles the diff in a manner compatible
	 *                                   with the output. Default empty.
	 *     @type string $title_left      Change the HTML to the left of the title.
	 *                                   Default empty.
	 *     @type string $title_right     Change the HTML to the right of the title.
	 *                                   Default empty.
	 *     @type bool   $show_split_view True for split view (two columns), false for
	 *                                   un-split view (single column). Default true.
	 * }
	 * @return string Empty string if strings are equivalent or HTML with differences.
	 */
	function wp_text_diff( $left_string, $right_string, $args = null ) {
		$defaults = array(
			&#039;title&#039;           =&gt; &#039;&#039;,
			&#039;title_left&#039;      =&gt; &#039;&#039;,
			&#039;title_right&#039;     =&gt; &#039;&#039;,
			&#039;show_split_view&#039; =&gt; true,
		);
		$args     = wp_parse_args( $args, $defaults );

		if ( ! class_exists( &#039;WP_Text_Diff_Renderer_Table&#039;, false ) ) {
			require ABSPATH . WPINC . &#039;/wp-diff.php&#039;;
		}

		$left_string  = normalize_whitespace( $left_string );
		$right_string = normalize_whitespace( $right_string );

		$left_lines  = explode( &quot;\n&quot;, $left_string );
		$right_lines = explode( &quot;\n&quot;, $right_string );
		$text_diff   = new Text_Diff( $left_lines, $right_lines );
		$renderer    = new WP_Text_Diff_Renderer_Table( $args );
		$diff        = $renderer-&gt;render( $text_diff );

		if ( ! $diff ) {
			return &#039;&#039;;
		}

		$is_split_view       = ! empty( $args[&#039;show_split_view&#039;] );
		$is_split_view_class = $is_split_view ? &#039; is-split-view&#039; : &#039;&#039;;

		$r = &quot;&lt;table class=&#039;diff$is_split_view_class&#039;&gt;\n&quot;;

		if ( $args[&#039;title&#039;] ) {
			$r .= &quot;&lt;caption class=&#039;diff-title&#039;&gt;$args[title]&lt;/caption&gt;\n&quot;;
		}

		if ( $args[&#039;title_left&#039;] || $args[&#039;title_right&#039;] ) {
			$r .= &#039;&lt;thead&gt;&#039;;
		}

		if ( $args[&#039;title_left&#039;] || $args[&#039;title_right&#039;] ) {
			$th_or_td_left  = empty( $args[&#039;title_left&#039;] ) ? &#039;td&#039; : &#039;th&#039;;
			$th_or_td_right = empty( $args[&#039;title_right&#039;] ) ? &#039;td&#039; : &#039;th&#039;;

			$r .= &quot;&lt;tr class=&#039;diff-sub-title&#039;&gt;\n&quot;;
			$r .= &quot;\t&lt;$th_or_td_left&gt;$args[title_left]&lt;/$th_or_td_left&gt;\n&quot;;
			if ( $is_split_view ) {
				$r .= &quot;\t&lt;$th_or_td_right&gt;$args[title_right]&lt;/$th_or_td_right&gt;\n&quot;;
			}
			$r .= &quot;&lt;/tr&gt;\n&quot;;
		}

		if ( $args[&#039;title_left&#039;] || $args[&#039;title_right&#039;] ) {
			$r .= &quot;&lt;/thead&gt;\n&quot;;
		}

		$r .= &quot;&lt;tbody&gt;\n$diff\n&lt;/tbody&gt;\n&quot;;
		$r .= &#039;&lt;/table&gt;&#039;;

		return $r;
	}
endif;
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