3v4l.org

run code in 300+ PHP versions simultaneously
<?php $cases = array(false, 0, 1, 2, 3, 4, 5, true, null); $cnt = count($cases); $ln = 1111111; $s = microtime(true); for ($i = 0; $i < $ln; $i++) { $result = array(); foreach ($cases as $c) { $result[] = !!$c; } }

preferences:
36.42 ms | 402 KiB | 5 Q