3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print_r(preg_match_all("/(?>-{1}+)\d+/",'11 22 -44 55 -99 55'));
Output for 5.4.0 - 7.1.0
2
Output for 4.3.4 - 5.3.29
Warning: preg_match_all() expects at least 3 parameters, 2 given in /in/qEfvq on line 2
Output for 4.3.3

Process exited with code 139.
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match_all() in /in/qEfvq on line 2