3v4l.org

run code in 150+ php & hhvm versions
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<?php function quicksort($array) { if (count($array) <= 1) { return array(); } $pivot = array_shift($array); $left = $right = array(); foreach($array as $object){ if ($object < $pivot) { $left[] = $object; } else { $right[] = $object; } } return array_merge(quicksort($left), array($pivot), quicksort($right)); } var_dump(quicksort([4, 10, 2, 6, 10, 1, 5]));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(4) { [0]=> int(2) [1]=> int(4) [2]=> int(6) [3]=> int(10) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/VL78k on line 23
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 '[', expecting ')' in /in/VL78k on line 23
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/VL78k on line 23
Process exited with code 255.