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<?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 $matches[2]; }else{ return 'null'; } }, $route);
Output for git.master, git.master_jit, rfc.property-hooks
/user/username

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