3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $pat = ',(?P[[:alnum:]]+)/(?P[[:alnum:]]+)/(?P<$1>.*?),'; $str = 'controller1/action1/fff'; preg_match($pat, $str, $matches); print_r($matches);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Compilation failed: unrecognized character after (?P at offset 3 in /in/0IZCG on line 6
Output for hhvm-3.10.0 - 3.12.0
Warning: Compilation failed: unrecognized character after (?P at offset 3 in /in/0IZCG on line 6
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Compilation failed: unrecognized character after (?P at offset 3 in /in/0IZCG on line 6 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (?P at offset 3 in /in/0IZCG on line 6 Array ( )