--TEST-- Bug #69761 (Serialization of anonymous classes should be prevented) --FILE-- <?php $instance = new class('foo') { public function __construct($i) { } }; var_dump(serialize($instance)); ?> --EXPECTF-- Fatal error: Uncaught Exception: Serialization of 'class@%s' is not allowed in %sbug69761.php:%d Stack trace: #0 %sbug69761.php(%d): serialize(Object(class@anonymous)) #1 {main} thrown in %sbug69761.php on line %d