遇到此错误：不正确的整数值：第 1 行的列 '____' 的''

Question

当我提交表单并使用此脚本将数据插入数据库时​​，我收到上述错误...有什么想法吗？

        //Include connect file to make a connection to test_cars database
        include("prototypeconnect.php");


        $proCode            =       $_POST["code"];
        $proDescr           =       $_POST["description"];
        $proManu            =       $_POST["manufacturer"];
        $proCPU             =       $_POST["cost_per_unit"];
        $proWPU             =       $_POST["weight_per_unit"];
        $proBarCode         =       $_POST["bar_code"];
        $proIngredients     =       $_POST["ingredients_list"];
        $proAllergens       =       $_POST["allergens_contains"];
        $proMayAllergens    =       $_POST["allergens_may_contain"];

        //Insert users data in database
        $sql = "INSERT INTO prodb.simplex_list 
                   code, description, manufacturer, 
                   cost_per_unit, weight_per_unit, bar_code,
                   ingredients_list, allergens_contains,
                   allergens_may_contain) 
                VALUES 
                  ( '$proCode', '$proDescr' , '$proManu', 
                   '$proCPU' , '$proWPU' , '$proBarCode', 
                   '$proIngredients' , '$proAllergens', 
                   '$proMayAllergens')";

        //Run the insert query

        if (!mysql_query($sql)) {
            echo mysql_error();
        }

    ?>

更新：我删除了 id 插入，因为它们是自动递增的，我从你的答案中了解到，不需要对 null 进行编码，mysql 会照顾 AI。谢谢大家！

Answer 1

查询需要像：-

 $sql = "INSERT INTO prodb.simplex_list 
         (code, description, manufacturer, 
          cost_per_unit, weight_per_unit, 
          bar_code, ingredients_list, allergens_contains, 
          allergens_may_contain) 
         VALUES ('$proCode', '$proDescr', '$proManu',
                 '$proCPU','$proWPU', '$proBarCode', 
                 '$proIngredients', '$proAllergens', 
                 '$proMayAllergens')";

注意：- 请停止使用mysql_*。使用mysqli_* 或PDO。此外，这仅在 id 字段必须自动递增时才有效。