3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $pattern="/\(((?>[^()]+)|(?R))*\)/"; $str = <<< EOL (def a (x) (+ 1 x)) (print (a 1)) EOL preg_match_all($pattern,$str,$out); var_dump($out);
Output for 5.4.0 - 5.4.26
Parse error: syntax error, unexpected 'preg_match_all' (T_STRING) in /in/mWv4N on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/mWv4N on line 13
Process exited with code 255.