Убрать названия категорий из url статьи

public function addArticle($article){

$sql = "INSERT INTO cms_content (category_id, user_id, pubdate, enddate, 
                                         is_end, title, description, content,
                                         published, hits, meta_desc, meta_keys,
                                         showtitle, showdate, showlatest,
                                         showpath, ordering, comments, seolink,
                                         canrate, pagetitle, url, tpl)
				VALUES ('{$article['category_id']}', '{$article['user_id']}', '{$article['pubdate']}', '{$article['enddate']}',
                         '{$article['is_end']}', '{$article['title']}', '{$article['description']}', '{$article['content']}', '{$article['published']}', 0,
                        '{$article['meta_desc']}', '{$article['meta_keys']}', '{$article['showtitle']}', '{$article['showdate']}', '{$article['showlatest']}',
                        '{$article['showpath']}', {$ordering}, '{$article['comments']}', '{$article['url']}',
                        '{$article['canrate']}', '{$article['pagetitle']}', '{$article['url']}', '{$article['tpl']}')";

//$article['seolink'] = $this->getSeoLink($article);
//$this->inDB->query("UPDATE cms_content SET seolink='{$article['seolink']}' WHERE id = '{$article['id']}'");

 public function updateArticle($id, $article, $not_upd_seo = false){

if(!$not_upd_seo){
			if ($article['url']) { 
				$article['url']  = cmsCore::strToURL($article['url']);
			}
        	/*$article['seolink'] = $this->getSeoLink($article);
			$article_seo_sql = "url='{$article['url']}', seolink='{$article['seolink']}',";
			*/
			$article['seolink']=$article['url'];
		}