3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = new DateTimeZone('UTC'); $a->meow = new stdClass; $b = &$a->meow; echo serialize([[$a], $b]);
based on tS2L6
Output for 5.5.24 - 7.2.0
a:2:{i:0;a:1:{i:0;O:12:"DateTimeZone":3:{s:4:"meow";O:8:"stdClass":0:{}s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}}i:1;r:4;}
Output for 5.4.0 - 5.4.45
a:2:{i:0;a:1:{i:0;O:12:"DateTimeZone":1:{s:4:"meow";O:8:"stdClass":0:{}}}i:1;r:4;}
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/5JGBB on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/5JGBB on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/5JGBB on line 6
Process exited with code 255.