3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = ['x', 'y', 'z']; $mask = 5; $count = count($arr); $mask &= pow(2, $count); $offset = $count - 1; $result = []; foreach ($arr as $k => $v) { if ($mask >> ($count - $k)) { $result[] = $v; } } var_dump($result);
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/mRJAC on line 3
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 '[' in /in/mRJAC on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/mRJAC on line 3
Process exited with code 255.