codeigniter-wordpress-bridge.php

<?php
/**
 * Plugin Name: CodeIgniter WordPress Bridge
 * Description: Authenticate subscribers using a trusted CodeIgniter 3 database session.
 * Version: 2.0.0
 * Author: Yash Desai
 * Author URI: https://github.com/yashdesai87
 * Requires at least: 6.8
 * Requires PHP: 7.4
 *
 * @author Yash Desai
 */

defined('ABSPATH') || exit;

// Configuration lives in wp-config.php; an unconfigured plugin does nothing.
if (!defined('CIWP_BRIDGE') || !is_array(CIWP_BRIDGE)
    || !isset(CIWP_BRIDGE['enabled']) || CIWP_BRIDGE['enabled'] !== true) {
    return;
}

require_once __DIR__ . '/includes/SessionDecoder.php';
require_once __DIR__ . '/includes/Bridge.php';

$ciwp_bridge = new \CIWPBridge\Bridge(CIWP_BRIDGE);
add_filter('determine_current_user', array($ciwp_bridge, 'authenticate'), 30);
add_filter('rest_authentication_errors', array($ciwp_bridge, 'authenticateRest'), 99);

// This helps caches that run after plugins load. A CDN or advanced-cache.php
// must independently bypass cache whenever the configured CI cookie is present.
if ($ciwp_bridge->hasCookie()) {
    if (!defined('DONOTCACHEPAGE')) {
        define('DONOTCACHEPAGE', true);
    }
    add_action('init', static function () {
        if (!headers_sent()) {
            nocache_headers();
        }
    }, 0);
}
unset($ciwp_bridge);