3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(serialize((object) ['foo' => 1, 'bar' => 2]));
Output for 5.6.38, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
string(47) "O:8:"stdClass":2:{s:3:"foo";i:1;s:3:"bar";i:2;}"
preferences:
119.91 ms | 1514 KiB | 4 Q