3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = explode(' ', microtime()); $r = substr($t[1], 1) . rand(111111, 999999) . substr($t[0], 2, 6); echo dechex($r);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.6
7fffffffffffffff
preferences:
55.17 ms | 402 KiB | 37 Q