3v4l.org

run code in 300+ PHP versions simultaneously
<?php $contents=chr(2).chr(2).chr(2)."122222234567890vwxyz".chr(3).chr(3).chr(3); var_dump(preg_match_all('/([\x00-\x09])\1{2,}/', $contents,$res)); var_dump($res); die();
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 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
int(2) array(2) { [0]=> array(2) { [0]=> string(3) "" [1]=> string(3) "" } [1]=> array(2) { [0]=> string(1) "" [1]=> string(1) "" } }

preferences:
213.63 ms | 405 KiB | 317 Q