3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match_all('/a/', "aaa", $m); var_dump(implode("", $m[0]));
Output for 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
string(3) "aaa"
preferences:
52.45 ms | 406 KiB | 5 Q