3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('pcre.jit', 1); preg_match('~[^\p{Han}\p{Z}]~u', ' ', $matches); var_dump($matches);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.12 - 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) { }
Output for 7.4.0 - 7.4.11
array(1) { [0]=> string(1) " " }
preferences:
44.84 ms | 407 KiB | 5 Q