classes/Facade.php
public static function delete($instance)
	{
		$class = get_called_class();

		if ($instance === true)
		{
			static::$_instances[$class] = array();

			return true;
		}
		elseif (static::exists($instance))
		{
			unset(static::$_instances[$class][$instance]);

			return true;
		}

		return false;
	}
public static function delete($instance)
	{
		$class = get_called_class();

		if ($instance === true)
		{
			static::$_instances[$class] = array();

			return true;
		}
		elseif (static::exists($instance))
		{
			unset(static::$_instances[$class][$instance]);

			return true;
		}

		return false;
	}
public static function delete ( $ instance ) { $ class = get_called_class ( ) ; if ( $ instance === true ) { static :: $ _instances [ $ class ] = array ( ) ; return true ; } elseif ( static :: exists ( $ instance ) ) { unset ( static :: $ _instances [ $ class ] [ $ instance ] ) ; return true ; } return false ; }
Deletes an instance if exists

@param  mixed $instance If true, all instances are deleted

@return boolean
Deletes an instance if exists