Charitable Email Preview Test – PHP 8.4

<?php

/**

 * Charitable Email Preview Test - PHP 8.4

 *

 * Use this ONLY if email preview works on PHP 8.2 but breaks on PHP 8.4

 *

 * WPCODE INSTRUCTIONS:

 * - Type: PHP Snippet

 * - Location: Run Everywhere

 * - Title: Charitable Preview Test - PHP 8.4

 */

// Override email preview handling with PHP 8.4 compatibility

add_action('template_redirect', function() {

    // Only intercept email preview requests

    if (isset($_GET['charitable_action']) && $_GET['charitable_action'] === 'preview_email') {

        if (!isset($_GET['email_id'])) {

            wp_die('Missing email ID for preview.');

        }

        // PHP 8.4 safe parameter handling with null coalescing

        $email_id = $_GET['email_id'] ?? '';

        $email_id = sanitize_key($email_id); // More appropriate than esc_html for keys

        if (empty($email_id)) {

            wp_die('Invalid email ID provided.');

        }

        // Get the email system with PHP 8.4 error handling

        if (function_exists('charitable_get_helper')) {

            $emails_helper = charitable_get_helper('emails');

            if ($emails_helper && method_exists($emails_helper, 'register_emails')) {

                // Force email registration

                $emails_helper->register_emails();

                $email_class = $emails_helper->get_email($email_id);

                if ($email_class && class_exists($email_class)) {

                    try {

                        // Create email object with PHP 8.4 exception handling

                        $email_object = new $email_class();

                        echo $email_object->preview();

                        exit;

                    } catch (Throwable $e) {

                        // PHP 8.4 compatible error handling

                        wp_die('PHP 8.4 Preview Error: ' . esc_html($e->getMessage()));

                    }

                } else {

                    wp_die('Email class not found: ' . esc_html($email_id));

                }

            }

        }

        wp_die('Email preview system unavailable.');

    }

}, 1); // Very high priority to run before other plugins