Replace string with Module callback, {{widget.social.facebook}} Codeigniter HMVC

I'm looking to insert some similar tags like {{widget.social.facebook}} into an instance of ckeditor.

The plan is to run them through either Modules::run() or widgets::run() method.

My initial approach is to start out with preg_replace_callback and a closure.

I have done something similar in the past, however this was just a simple string replace from array data. I am thinking of a similar approach possibly.

 $callback = function ($matches) use ($data)
    {
            return ( isset($data[$matches[1]]) ) 
               ? $data[$matches[1]] 
               : $matches[0];
    };

     return preg_replace_callback(
                '/\{(.*?)\}/', 
                $callback, 
                $this->template);

I just cant get my brain around the best approach right now(brain melt), hopefully you guys might be able to shed some light

Ok so I managed to get it working...

public function _tags( $html ){


     $callback = function( $matches ){

         list($module, $method, $param) = explode('.', $matches[1]);

         return isset( $matches[1] ) 
                ? Modules::run("${module}/_${method}", $param) 
                : $matches[0] ;

         };

         return preg_replace_callback('/\{{module.(.*?)\}}/', $callback, $html);

   }

   public function _test($id=null){
      echo "Test Replace is done ${id}";
   }

   public function _test2($id=null){
      echo "Test2 Replace is done ${id}";
   }

-

Test data

<section>
{{module.pages.test.25}}
</section>

<aside>
//{{module.sidebar}}
{{module.pages.test2.25}}

Blaa I'm not sure I like this html scraping method.

Open to suggestions/improvements