3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match_all('/[a-z]/i', ' Hello', $match); var_dump($match);
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 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> array(5) { [0]=> string(1) "H" [1]=> string(1) "e" [2]=> string(1) "l" [3]=> string(1) "l" [4]=> string(1) "o" } }

preferences:
269.36 ms | 406 KiB | 459 Q