3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match("/(user1)(user2)(user3)(user4)(user5)/", "user1user2user3user4user5", $matches); echo "<pre>"; print_r($matches); echo "</pre>";
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 - 5.5.36, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<pre>Array ( [0] => user1user2user3user4user5 [1] => user1 [2] => user2 [3] => user3 [4] => user4 [5] => user5 ) </pre>
preferences:
253.92 ms | 406 KiB | 375 Q