3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = time(); $arr = array(1,2,3,4,5,6,7,8,9,0); foreach ($arr as $id => $val) { $arr[$id] = $val++; } echo time() - $time;

preferences:
34.79 ms | 402 KiB | 5 Q