3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = pack('N', time()); $b = pack('N', substr(time(), 2, 8)); $c = random_bytes(2); $d = random_bytes(2); echo bin2hex($a . $b . $c . $d).PHP_EOL; echo time();

preferences:
38.96 ms | 402 KiB | 5 Q