3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('foo', ''); echo "Before: \n\n" , var_dump($array); $array = array_filter($array); echo "\n\nAfter: \n\n" , var_dump($array);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Before: array(2) { [0]=> string(3) "foo" [1]=> string(0) "" } After: array(1) { [0]=> string(3) "foo" }
preferences:
272.17 ms | 406 KiB | 383 Q