3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = array('', "", null, true, false); var_dump(array_filter($t));
Output for 7.3.24 - 7.3.33, 7.4.12 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
array(1) { [3]=> bool(true) }
preferences:
74.8 ms | 406 KiB | 5 Q