GKNews 4 - вывод по тэгам (нужна помощь с PHP, SQL) - Общие вопросы по расширениям Joomla

$this->likes = array ();

if ($key)
 {
$this->likes[] = ',' . $db->getEscaped($key). ','; // surround with commas so first and last items have surrounding commas		
 }

 . (($this->likes )? ' AND ( CONCAT(",", REPLACE(a.metakey,", ",","),",") LIKE "%'.implode('%" OR CONCAT(",", REPLACE(a.metakey,", ",","),",") LIKE "%', $this->likes).'%" )' : '' )

if ($metakey = trim($db->loadResult()))
		{
			// explode the meta keys on a comma
			$keys = explode(',', $metakey);
			
			// assemble any non-blank word(s)
			foreach ($keys as $key)
			{
				$key = trim($key);
				
				if ($key) {
					$this->likes[] = ',' . $db->getEscaped($key). ','; // surround with commas so first and last items have surrounding commas		
				
				}
			}
		}

. (($this->likes )? ' AND ( CONCAT(",", REPLACE(a.metakey,", ",","),",") LIKE "%'.implode('%" OR CONCAT(",", REPLACE(a.metakey,", ",","),",") LIKE "%', $this->likes).'%" )' : '' )

. (($this->likes )? ' AND ( CONCAT(",", REPLACE(content.metakey,", ",","),",") LIKE "%'.implode('%" OR CONCAT(",", REPLACE(content.metakey,", ",","),",") LIKE "%', $this->likes).'%" )' : '' )

$this->config['set_metakeys'] = $params->get( 'set_metakeys', '' );

$keys = explode(',', $this->params->get( 'set_metakeys', '' ) );

$keys = explode(',', $this->$config['set_metakeys'] );