function &get_key($config_key)
	{
		list($file_name, $section_name, $var_name) = explode('/', $config_key, 3);
		$result = &$this->get($file_name, $section_name, $var_name);
		return $result;
	}
function &get_key($config_key)
	{
		list($file_name, $section_name, $var_name) = explode('/', $config_key, 3);
		$result = &$this->get($file_name, $section_name, $var_name);
		return $result;
	}
function & get_key ( $ config_key ) { list ( $ file_name , $ section_name , $ var_name ) = explode ( '/' , $ config_key , 3 ) ; $ result = & $ this -> get ( $ file_name , $ section_name , $ var_name ) ; return $ result ; }
Retrieves config info based on the key.

@param $file_name string config key (filename/section/var)
@return string|array same as get()
@uses get() retrieves information from config file and returns it
Retrieves config info based on the key .