public function size($user = null)
	{
		if ($this->_driver)
		{
			// Use the default user (provided in __construct) if none is given
			if (!$user)
			{
				$user = $this->_user;
			}
			
			$queued = true;
			return $this->_driver->queueLeft($user, $queued);
		}
		
		return null;
	}
public function size($user = null)
	{
		if ($this->_driver)
		{
			// Use the default user (provided in __construct) if none is given
			if (!$user)
			{
				$user = $this->_user;
			}
			
			$queued = true;
			return $this->_driver->queueLeft($user, $queued);
		}
		
		return null;
	}
public function size ( $ user = null ) { if ( $ this -> _driver ) { // Use the default user (provided in __construct) if none is given if ( ! $ user ) { $ user = $ this -> _user ; } $ queued = true ; return $ this -> _driver -> queueLeft ( $ user , $ queued ) ; } return null ; }
Tell the number of items currently in the queue

@param string $user		The username of the user to check the queue size for
@return integer			The number of items in the queue
Tell the number of items currently in the queue