3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = serialize([]); var_dump($array, base64_encode($array), base64_encode('a:')); $object = serialize(new \stdClass()); var_dump($object, base64_encode($object), base64_encode('O:'));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(6) "a:0:{}" string(8) "YTowOnt9" string(4) "YTo=" string(19) "O:8:"stdClass":0:{}" string(28) "Tzo4OiJzdGRDbGFzcyI6MDp7fQ==" string(4) "Tzo="
preferences:
97.66 ms | 1269 KiB | 4 Q