使用 SQL 查询更新用户信息

Question

更新代码，在输入信息并单击提交按钮运行此代码后，它返回到帐户页面但不更新数据库：

<font face="ClearSans-Thin">
<font color="lightgray">

<?php

include 'editaccount.php';
include 'connection.php';
?>

<center>
<?php
if (isset($_POST['uregsubmit'])) {
    $firstname = $_POST['ufirstname'];
    $lastname = $_POST['ulastname'];
    $email = $_POST['uemail'];
    $dob = $_POST['udob'];
    $user = $_POST['uregisterusername'];

    $pass = $_POST['uregisterpassword'];

    }

    //the query
$query = "UPDATE Users SET FirstName='$firstname', LastName='$lastname' WHERE Username='$user'";
//execute the query
$result = mysqli_query($connection, $query)
or die("Error: ".mysqli_error($connection));
//check and see if any data returned





?>
</center>

Answer 1

你在 WHERE 之前多了一个逗号

Answer 2

在 if 语句中写入 sql 查询

<?php
if (isset($_POST['uregsubmit'])) {
    $firstname = $_POST['ufirstname'];
    $lastname = $_POST['ulastname'];
    $email = $_POST['uemail'];
    $dob = $_POST['udob'];
    $user = $_POST['uregisterusername'];
    $pass = $_POST['uregisterpassword'];

    //the query
    $query = "UPDATE Users SET FirstName='$firstname', LastName='$lastname' WHERE Username='$user'";
    //execute the query
    $result = mysqli_query($connection, $query)
    or die("Error: ".mysqli_error($connection));
    //check and see if any data returned
}
?>

使用 SQL 查询更新用户信息

Updating User Information using SQL query

php

mysql

sql

mysqli