3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = [0 => 23, 1 => 1, 2 => 22]; asort($arr); $redirect = array_pop($arr); var_dump(array_pop($arr)); var_dump(array_keys($redirect));
based on SUEbD
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
int(22) Warning: array_keys() expects parameter 1 to be array, integer given in /in/1SmtD on line 6 NULL
Output for hhvm-3.10.0 - 3.12.0
int(22) Warning: array_keys() expects parameter 1 to be an array or collection in /in/1SmtD on line 6 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/1SmtD on line 2
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 '[' in /in/1SmtD on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/1SmtD on line 2
Process exited with code 255.