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Edit File: facebook-server-async-task.php

<?php namespace PixelYourSite; defined('ABSPATH') or die('Direct access not allowed'); /** * Facebook Async Task Handler * * Extends AbstractAsyncTask to handle Facebook server events asynchronously */ class FacebookAsyncTask extends AbstractAsyncTask { /** * Action name for this async task * * @var string */ protected $action = 'pys_send_server_event'; /** * Get the server instance for Facebook * * @return FacebookServer */ protected function getServerInstance() { return FacebookServer(); } /** * Get allowed classes for unserialization * Facebook uses specific SDK classes that need to be allowed * * @return array Array of allowed class names */ protected function getAllowedClasses() { return [ 'stdClass', 'PYS_PRO_GLOBAL\FacebookAds\Object\ServerSide\Event', 'PYS_PRO_GLOBAL\FacebookAds\Object\ServerSide\UserData', 'PYS_PRO_GLOBAL\FacebookAds\Object\ServerSide\CustomData', 'PYS_PRO_GLOBAL\FacebookAds\Object\ServerSide\Content' ]; } /** * Override run_action to ensure SDK classes are loaded before unserialize(). */ protected function run_action() { ServerEventHelper::requireServerSideClasses(); parent::run_action(); } }