classes/Product.php

@@ -1673,6 +1673,7 @@ class ProductCore extends ObjectModel
 			$cur_cart = new Cart($id_cart);
 		}
 
+		$cart_quantity = 0;
 		if ((int)($id_cart))
 		{
 			if (!isset(self::$_cart_quantity[(int)($id_cart).'_'.(int)($id_product)]) OR self::$_cart_quantity[(int)($id_cart).'_'.(int)($id_product)] !=  (int)($quantity))

classes/Search.php

@@ -461,13 +461,21 @@ class SearchCore
 						$wordIdsByWord[$product['id_shop']][$product['id_lang']]['_'.$word] = 0;
 					}
 
+				$existingWords = $db->ExecuteS('SELECT word FROM '._DB_PREFIX_.'search_word WHERE word IN ('.implode(',', $queryArray2).') GROUP BY word');
+				if($existingWords)
+					foreach($existingWords as $data)
+						unset($queryArray[$data['word']]);
+				
 				if (count($queryArray))
 				{
 					// The words are inserted...
 					$db->Execute('
 					INSERT IGNORE INTO '._DB_PREFIX_.'search_word (id_lang, id_shop, word)
 					VALUES '.implode(',',$queryArray));
+				}
 					
+				if (count($queryArray2))
+				{
 					// ...then their IDs are retrieved and added to the cache
 					$addedWords = $db->ExecuteS('
 					SELECT sw.id_word, sw.word