3v4l.org

run code in 300+ PHP versions simultaneously
<?php $res = preg_match('/^(A{1,2}B)+$/',str_repeat('AB',8192)); if ($res === false) { var_dump(preg_last_error() == PREG_JIT_STACKLIMIT_ERROR); } ?>
preferences:
34.51 ms | 408 KiB | 5 Q