/**
* Kick off the class if it hasn't been instantiated.
*
* There is a lot of information about the Singleton design pattern
* and singleton implementations for WordPress and plugins. I am not (at all!)
* an expert on this and may very well be instantiating Subtitles in the
* wrong way. If there's a better way to do this, or if it's not necessary
* to use this design pattern with the plugin, please let me know. The reason
* I've done it this way is because plugins should never be instantiated twice
* in WordPress. In general, I assume that this won't happen under normal circumstances,
* but using this design pattern ensures that if someone tries to instantiate
* Subtitles twice, then it won't be possible to do so.
*
* For more reading, see the following links.
*
* @link http://en.wikipedia.org/wiki/Singleton_pattern
* @link http://hardcorewp.com/2013/using-singleton-classes-for-wordpress-plugins/
* @link http://eamann.com/tech/the-case-for-singletons/
* @link http://www.toppa.com/2013/the-case-against-singletons-in-wordpress/
* @link http://eamann.com/tech/making-singletons-safe-in-php/
*
* @staticvar Singleton $instance The Singleton instance of this class.
* @return Singleton The Singleton instance of this class.
* @access public
* @static
*
* @since 1.0.0
*/
public static function getinstance()
{
if (!self::$instance) {
self::$instance = new Subtitles();
}
return self::$instance;
}
