#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '$sql4 = "update product set product_name='$product_name', product_detail='$produ' at line 1
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '$sql4 = "update product set product_name='$product_name', product_detail='$produ' at line 1