3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = uniqid(); function getNumber($val) { $lets = array(); foreach (range('a', 'z') as $let) { $lets[] = ("'`" . $let . "`'"); } $num = range(1, 26); $val = strtolower($val); $ret = preg_replace($lets, $num, $val); $ret = substr($ret, 0, 10); return $ret; } $b = getNumber($a); echo "<pre>"; var_dump($b);

preferences:
42.45 ms | 402 KiB | 5 Q