3v4l.org

run code in 500+ PHP versions simultaneously
<?php $input_lines= array("asdf","fdas", "asds", "d fm", "dfaa", "aaaa", "aabb", "aaabb"); print_r(preg_grep('/(\p{L}).*\1/', $input_lines));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
Array ( [2] => asds [4] => dfaa [5] => aaaa [6] => aabb [7] => aaabb )
preferences:
102.65 ms | 1295 KiB | 4 Q