3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = microtime(true); $i=0; while($i < 60000) { unserialize(serialize(array('a'=>'b','c'=>'d'))); } $time = microtime(true) - $time; echo 'array_diff() took ' . number_format($time, 3) . ' seconds and returned ' . count($data_diff1) . " entries\n";

preferences:
30.28 ms | 402 KiB | 5 Q