Index: temp/trunk/html/admin/products/product.php
===================================================================
--- temp/trunk/html/admin/products/product.php	(revision 9435)
+++ temp/trunk/html/admin/products/product.php	(revision 9436)
@@ -349,5 +349,6 @@
 		// dtb_products_class ¤Î¥«¥é¥à¤ò¼èÆÀ
 		$arrColList = sfGetColumnList("dtb_products_class", $objQuery);
-		unset($arrColList["product_class_id"]);	 //µ¬³ÊID¤ÏÅÐÏ¿¤·¤Ê¤¤
+		$arrColList_tmp = array_flip($arrColList);
+		unset($arrColList[$arrColList_tmp["product_class_id"]]);	 //µ¬³ÊID¤ÏÅÐÏ¿¤·¤Ê¤¤
 		
 		sfprintr($arrColList);