3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $params = array('username' => "l33t"); $route = "/user/[a-z0-9:username]"; echo preg_replace_callback('~\[([a-z0-9\.\-_\+]+)\:([a-z0-9\_]+)\]~', function($matches) use(&$params) { if(isset($params[$matches[2]])){ return $params[$matches[2]]; }else{ return 'null'; } }, $route);
Output for 5.3.0 - 7.1.0
/user/l33t
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/GAKXf on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/GAKXf on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GAKXf on line 4
Process exited with code 255.