3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'Just 44 4 test 444'; preg_match_all('!\d+!', $str, $matches); print_r($matches); if (in_array("4", $matches[0])){ echo "Match found"; } else { echo "Match not found"; }
Output for 5.6.0 - 5.6.27, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => Array ( [0] => 44 [1] => 4 [2] => 444 ) ) Match found
preferences:
159.83 ms | 408 KiB | 5 Q