3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ 'test', 'test2', '2384 sldjf $$' ]; echo base64_encode(serialize($arr)); ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
YTozOntpOjA7czo0OiJ0ZXN0IjtpOjE7czo1OiJ0ZXN0MiI7aToyO3M6MTM6IjIzODQgc2xkamYgJCQiO30=

preferences:
193.99 ms | 403 KiB | 214 Q