Check method/function exist with Controller

You can use the _remap method from CI as described here:

http://www.codeigniter.com/userguide3/ge...thod-calls

The following short example shows you a quick usage

PHP Code:

class User extends CI_Controller {
    public function __construct() {
      parent::__construct();
    }

    function _remap($method)
    {
        if(method_exists($this,$method))
        {
            call_user_func(array($this, $method));
            return false;
        }
        else
        {
            echo 'Method not found!';
        }
    }

    // .... your methods ....

}