3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo base64_encode(hash('sha256', serialize([]), TRUE));
Output for 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
NXhscRe0440PFpI5dSznEVgmauL25KojD7u4e9aZwOM=
preferences:
44.37 ms | 406 KiB | 5 Q