3v4l.org

run code in 300+ PHP versions simultaneously
<?php $people = array( array('name' => 'Kalle', 'salt' => 856412), array('name' => 'Pierre', 'salt' => 215863) ); for($i = 0, $size = count($people); $i < $size; ++$i) { $people[$i]['salt'] = mt_rand(000000, 999999); } ?>

preferences:
39.26 ms | 402 KiB | 5 Q