Изменение скина или элемента дизайна в зависимости от времени - Дизайн и модификация Invision Power Board

	/**
	 * Fetch a skin based on user's incoming data (user-agent, URL) or via other params
	 *
	 * The priority chain goes like this:
	 *
	 * Incoming Gateway file (index.php / xml.php / rss.php, etc) filters out some skins, then:
	 * - User Agent
	 * - URL Remap
	 * - App Specific
	 * - Member specific
	 * - Default skin
	 *
	 * @access	protected
	 * @return	int			ID of skin to use
	 */
	protected function _fetchUserSkin()

		foreach( array( '_fetchSkinByUserAgent', '_fetchSkinByURLMap', '_fetchSkinByApp', '_fetchSkinByMemberPrefs', '_fetchSkinByDefault' ) as $function )
		{
			$useSkinID = $this->$function();
			
			if ( $useSkinID !== FALSE )
			{
				break;
			}
		}

	private function _fetchSkinByDefault()
	{
		$useSkinID = FALSE;
		
		/* Got one set by default for this gateway? */
		foreach( $this->allSkins as $data )
		{
			/* Can use with this output format? */
			if ( $data['_gatewayExclude'] !== FALSE )
			{
				continue;
			}
			
			if ( $data['set_is_default'] )
			{
				$useSkinID = $data['set_id'];
				break;
			}
		}
		
		/* Did we get anything? */
		if ( $useSkinID === FALSE )
		{
			foreach( $this->allSkins as $data )
			{
				/* Can use with this output format? */
				if ( $data['_gatewayExclude'] !== FALSE )
				{
					continue;
				}
				
				/* Grab the first one */
				$useSkinID = $data['set_id'];
				break;
			}
		}
		
		IPSDebug::addMessage( "Skin set not found, setting default. Using set #" . $useSkinID );
		
		return $useSkinID;
	}

	private function _fetchSkinByDefault()
	{
                switch(intval(date("H")))
		{
			case 0: case 1: case 2: case 3: case 4: case 5:
				$useSkinID = 4; break;
			case 6: case 7: case 8: case 9: case 10: case 11:
				$useSkinID = 5; break;
			case 12: case 13: case 14: case 15: case 16: case 17:
				$useSkinID = 6; break;
			case 18: case 19: case 20: case 21: case 22: case 23:
				$useSkinID = 7; break;

		}
		return $useSkinID;
	}