3v4l.org

run code in 300+ PHP versions simultaneously
<?php $o = unserialize('a:7:{s:8:"activity";i:4;s:7:"members";i:5;s:8:"register";i:6;s:8:"activate";i:7;s:7:"ranking";i:29;s:6:"venues";i:30;s:12:"achievements";i:31;}'); print_r($o);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [activity] => 4 [members] => 5 [register] => 6 [activate] => 7 [ranking] => 29 [venues] => 30 [achievements] => 31 )

preferences:
261.42 ms | 406 KiB | 421 Q