3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo($v) { return $v + 1; } $foo = function ($v) { return $v + 1; }; $a = range(0,100000); $t = microtime(1); array_walk('foo', $a); $t = microtime(1) - $t; var_dump($t); $a = range(0,100000); $t = microtime(1); array_walk($foo, $a); $t = microtime(1) - $t; var_dump($t);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.32
Fatal error: Only variables can be passed by reference in /in/qL3g7 on line 13
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/qL3g7 on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/qL3g7 on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/qL3g7 on line 7
Process exited with code 255.
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115.15 ms | 401 KiB | 121 Q