✏ EDIT: contact-submit.php

<?php
declare(strict_types=1);

header('Content-Type: application/json; charset=utf-8');

require_once __DIR__ . '/functions.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['ok' => false, 'message' => 'Invalid request method.']);
    exit;
}

$name = trim((string) ($_POST['name'] ?? ''));
$email = trim((string) ($_POST['email'] ?? ''));
$phone = trim((string) ($_POST['phone'] ?? ''));
$company = trim((string) ($_POST['company'] ?? ''));
$message = trim((string) ($_POST['message'] ?? ''));

if ($name === '' || $email === '' || $message === '') {
    http_response_code(422);
    echo json_encode(['ok' => false, 'message' => 'Please provide your name, email and message.']);
    exit;
}

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    http_response_code(422);
    echo json_encode(['ok' => false, 'message' => 'Please enter a valid email address.']);
    exit;
}

foreach ([$name, $email, $phone, $company] as $field) {
    if (strlen($field) > 160) {
        http_response_code(422);
        echo json_encode(['ok' => false, 'message' => 'One of the submitted fields is too long.']);
        exit;
    }
}

if (strlen($message) > 2000) {
    http_response_code(422);
    echo json_encode(['ok' => false, 'message' => 'Please keep your message under 2000 characters.']);
    exit;
}

$db = db();
if (!$db) {
    http_response_code(503);
    echo json_encode(['ok' => false, 'message' => 'Database connection is not configured yet.']);
    exit;
}

$ip = substr((string) ($_SERVER['REMOTE_ADDR'] ?? ''), 0, 45);
$agent = substr((string) ($_SERVER['HTTP_USER_AGENT'] ?? ''), 0, 255);

$stmt = $db->prepare("INSERT INTO enquiries (name, email, phone, company, message, source_ip, user_agent, status, created_at, updated_at)
                      VALUES (?, ?, ?, ?, ?, ?, ?, 'new', NOW(), NOW())");
if (!$stmt) {
    http_response_code(500);
    echo json_encode(['ok' => false, 'message' => 'Unable to prepare the enquiry.']);
    exit;
}

$stmt->bind_param('sssssss', $name, $email, $phone, $company, $message, $ip, $agent);
if (!$stmt->execute()) {
    http_response_code(500);
    echo json_encode(['ok' => false, 'message' => 'Unable to save the enquiry.']);
    exit;
}

echo json_encode(['ok' => true, 'message' => 'Thank you. Your enquiry has been received.']);
?>

[✗] CANCEL