if(!isset($this->helpers)) $this->init_helpers();
if($this->helpers === false || !isset($this->helpers[$helper_name])) return false;
if(!isset($this->helpers[$helper_name]["file"])) return false;
if(!isset($this->helpers)) $this->init_helpers();
if($this->helpers === false || !isset($this->helpers[$helper_name])) return false;
if(!isset($this->helpers[$helper_name]["file"])) return false;