3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $iter = 10000; $array = range(0, $iter); $function = function($val, $key) {}; $t = microtime(true); for($i = 0; $i < $iter; $i++) { array_walk($array, $function); } echo 'array_walk '.($walk = microtime(true) - $t); $t = microtime(true); for($i = 0; $i < $iter; $i++) { array_map($function, $array, array_keys($array)); } echo ', array_map '.($map = microtime(true) - $t); echo ', '.(100 - $walk / $map * 100).'%';
Output for 5.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0

Process exited with code 137.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/73ttT on line 5
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 T_FUNCTION in /in/73ttT on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/73ttT on line 5
Process exited with code 255.