SQL 更新无效

Question

我正在尝试更新名为 customer 的数据库中的一些数据。这是我的代码

<?php

Require("dbconnect.php");

$Customer_id = $_POST['Customer_id'];
 $Customer_title = $_POST['Customer_title'];
 $Customer_forename = $_POST['Customer_forename'];
 $Customer_surname = $_POST['Customer_surname'];
 $Customer_contact = $_POST['Customer_contact'];

    ?>

所有变量都保存着正确的数据，因为我已经测试过它们。当我运行这段代码时没有收到任何错误，但是它也没有更新数据库？谁能帮忙？提前致谢！

Answer 1

字符串常量需要单引号（名字和姓氏）：

$sql = "UPDATE `a6123854_a220559`.`Customer` 
SET Customer_forename = '".$Customer_forename."', Customer_surname = '".$Customer_surname."'
WHERE Customer_id = ".$Customer_id."";

请注意，您的代码可能容易受到 SQL injection.

的影响

Answer 2

有一件小事很可能会解决您的问题。在报价单里。

$sql = "UPDATE `a6123854_a220559`.`Customer`
SET Customer_forename='".$Customer_forename."',
Customer_surname='".$Customer_surname."'
WHERE Customer_id='".$Customer_id."'";

SQL 更新无效

SQL UPDATE not working

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