3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "Hello"; $b = function() { echo ",world"; }; $arr = [$a,$b]; array_walk($arr, function($v) { if ($v instanceof Closure) { call_user_func($v); } else { echo $v; } }); var a = 10; a = a++ + ++a;
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected 'var' (T_VAR) in /in/qIACj on line 16
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/qIACj on line 6
Process exited with code 255.
preferences:
167.45 ms | 1395 KiB | 67 Q