3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $inputArray = array('Tuesday' => null, 'Friday' => null, 'Monday' => null, 'Thursday' => null, 'Wednesday' => null); $desiredIndexOrder = array('Monday' => 5, 'Tuesday' => 4, 'Wednesday' => 3, 'Thursday' => 2, 'Friday' => 1); uksort($inputArray, function($a, $b) use ($desiredIndexOrder) { return $desiredIndexOrder[$a] > $desiredIndexOrder[$b] ? -1 : 1; }); echo print_r($inputArray);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [Monday] => [Tuesday] => [Wednesday] => [Thursday] => [Friday] => ) 1
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/PveoK on line 6
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/PveoK on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/PveoK on line 6
Process exited with code 255.