3v4l.org

run code in 300+ PHP versions simultaneously
<?php function array_filter_strlen($a, $l) { $a = preg_replace('/^.{0, 3}$/u', '', $a); var_dump($a); return $a; } print_r(array_filter_strlen(array('privet', 'mir', 'i', 'cyberforum'), 3));
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, 7.2.0 - 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
array(4) { [0]=> string(6) "privet" [1]=> string(3) "mir" [2]=> string(1) "i" [3]=> string(10) "cyberforum" } Array ( [0] => privet [1] => mir [2] => i [3] => cyberforum )

preferences:
263 ms | 406 KiB | 397 Q