public function notify($arguments = null)
	{
		foreach ($this->observers as $observer) {
			$observer->update($this, $arguments);
		}
	}
public function notify($arguments = null)
	{
		foreach ($this->observers as $observer) {
			$observer->update($this, $arguments);
		}
	}
public function notify ( $ arguments = null ) { foreach ( $ this -> observers as $ observer ) { $ observer -> update ( $ this , $ arguments ) ; } }
Notify all the attached observers.

@param mixed $arguments
@return null
Notify all the attached observers .