3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = DateTimeImmutable::createFromFormat('U', 1292177455); $b = DateTimeImmutable::createFromFormat('U', 1292177455); var_dump($a > $b); var_dump($a == $b);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.4.140.0140.00717.48

preferences:
28.08 ms | 403 KiB | 5 Q