3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = unserialize('O:8:"stdClass":0:{}"'); var_dump($obj);
Output for 8.3.0 - 8.3.6
Warning: unserialize(): Extra data starting at offset 19 of 20 bytes in /in/3nkCb on line 3 object(stdClass)#1 (0) { }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.6.28, 7.0.14, 7.1.0, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
object(stdClass)#1 (0) { }

preferences:
199.25 ms | 404 KiB | 218 Q