Mine

//---		// load_module() will load a module into the framework		// @param object $module_object		//---		function load_module( &$module_object ) {						if ( !is_object( $module_object ) ) {				return false;			}			$module_name = $module_object->identitfier;			$this->modules[ $module_name ] = &$module_object;					}				//---		// trigger_event() will trigger an event to all loaded modules or selected modules		// @param string $event		// @param mixed $module		//---		function trigger_event( $event, $module='' ) {			if ( empty( $module ) ) {				// trigger event to all loaded modules				foreach( $this->modules as $name=>$object ) {					if ( method_exists( $object, $event ) ) {						return $this->modules[ $name ]->$event();					}				}			} else if ( is_array( $module ) ) {				// trigger event to a selected number of modules				foreach( $this->modules as $name=>$object ) {					if ( in_array( $name, $module ) && method_exists( $object, $event ) ) {						return $this->modules[ $name ]->$event():					}				}			} else {				// trigger to single module				if ( method_exists( $this->modules[ $name ], $event ) ) {					return $this->modules[ $name ]->$event();				}			}		}