$id){ if(!$id || $id == 0){ unset($explode[$key]) ; } } return array_unique( $explode ); } /** * @param $product_ids array */ public static function set_comparison_cookie( $product_ids ) { $value = implode( ',', $product_ids ); setcookie( Comparison::COOKIE_KEY, $value, strtotime( '+' . Comparison::COOKIE_TIME_IN_DAYS . ' days' ), '/' ); } public static function add_product_id( $id ) { $product_ids = self::get_product_ids(); array_push( $product_ids, $id ); self::set_comparison_cookie( $product_ids ); } }