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run code in 150+ php & hhvm versions
Bugs & Features
<?php $r = range(1,10); array_walk($r, function(&$value, $key) { $double = $value*2; if ($double >= 12) { $value = $double; } else { unset($value); } }); var_dump($r);
Output for 5.3.0 - 7.1.0
array(10) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(12) [6]=> int(14) [7]=> int(16) [8]=> int(18) [9]=> int(20) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/Xl8NU 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/Xl8NU on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Xl8NU on line 5
Process exited with code 255.