front url joomla 2.5 from backend

front url joomla 2.5 from backend

JFactory::getApplication('site')->initialise();
			
				$itemUrl = JRoute::_(ContentHelperRoute::getArticleRoute($article->id, $article->catid));
	
				$app = JFactory::getApplication();
				
				$app    = JApplication::getInstance('site');
				$router = $app->getRouter();
				$route  = $router->build((ContentHelperRoute::getArticleRoute($article->id)));
			  

				// $fronturl = rtrim(JUri::root(), '/') . preg_replace('/administrator\//', '', $route, 1);
	
				$fronturl = rtrim(JUri::root(), '/') . preg_replace('/administrator\//', 'purge/', $route, 1);
				// jbdump::log($fronturl);
				$fronturl = preg_replace('/(\?id=\d+)/', '', $fronturl);