3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array(1 => '5ive', 'jim' => 'bob', 4 => 5); echo array_pop(array_merge($array));
Output for 7.0.0 - 7.2.0
Notice: Only variables should be passed by reference in /in/lWIpG on line 5 5
Output for 4.3.0 - 5.0.4, hhvm-3.10.1 - 3.17.3
5
Output for 5.1.0 - 5.6.30
Strict Standards: Only variables should be passed by reference in /in/lWIpG on line 5 5
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/lWIpG on line 5
Process exited with code 255.