如何在PHP中更新用户帐户信息的多列

我一直在尝试让我的用户更新他们的信息，因此第一个问题是，我不断遇到以下错误：

注意：未定义索引：第27行D:\xampp\htdocs\Ecommerce1\resetinfo.php中的新用户地址

但我确保它是在我的代码中定义的。下一个错误是：

警告：mysqli_stmt_bind_param（）：变量数量与第70行D:\xampp\htdocs\Ecommerce1\resetinfo.php中准备语句中的参数数量不匹配

我不确定这个错误是从哪里来的，但我假设它来自第一个错误。现在我将向您展示代码

曾经有一段时间，我发表了我的更新声明，而不是：

$sql = "UPDATE users SET 
user_address = '$new_user_address',
user_city = '$new_user_city', 
user_country = '$new_user_country', 
postal_code = '$new_postal_code' 
WHERE id = ?";

我用过：

$sql = "UPDATE users SET 
user_address = ?,
user_city = ?, 
user_country = ?, 
postal_code = ?' 
WHERE id = ?";

它正确地将我重定向到我的个人资料页面，但数据没有更新

这是我的代码：

<?php
session_start();// Initialize the session

// Check if the user is logged in, if not then redirect to login page
if(!isset($_SESSION["loggedin"]) || $_SESSION["loggedin"] !== true){
    header("location: login.php");
    exit;
}

// Include config file
require_once "dbconfig.php";
 $query = "SELECT user_address, user_country, user_city, postal_code FROM users WHERE id ='".$_SESSION['id']."';";
$result = mysqli_query($link, $query);
while ($row = mysqli_fetch_array($result)){
    $new_user_address = $row['user_address'];
    $new_user_country = $row['user_country'];
    $new_user_city = $row['user_city'];
    $new_postal_code = $row['postal_code'];
}
$new_user_address_err = $new_user_city_err = $new_user_country_err = $new_postal_code_err = "";


// Processing form data when form is submitted
if($_SERVER["REQUEST_METHOD"] == "POST"){

    // Validate new password
        if(empty(trim($_POST["new_user_address"]))){
   $new_user_address_err = "City is empty.";
    } else{
        $new_user_address = trim($_POST["new_user_address"]);
    }

     if(empty(trim($_POST["new_user_city"]))){
   $new_user_city_err = "City is empty.";
    } else{
        $new_user_city = trim($_POST["new_user_city"]);
    }


    if(empty(trim($_POST["new_user_country"]))){
   $new_user_country_err = "Country is empty.";
    } else{
        $new_user_country = trim($_POST["new_user_country"]);
    }   

    if(empty(trim($_POST["new_postal_code"]))){
   $new_posta_code_err = "Postal Code is empty.";
    }elseif(strlen(trim($_POST["new_postal_code"])) < 6){
        $new_postal_code_err =  "Postal Code must have 6 characters.";
    } else{
        $new_postal_code = trim($_POST["new_postal_code"]);
    }  






    // Check input errors before updating the database
        // Prepare an update statement
        $sql = "UPDATE users SET 
        user_address = '$new_user_address',
        user_city = '$new_user_city', 
        user_country = '$new_user_country', 
        postal_code = '$new_postal_code' 
        WHERE id = ?";

        if($stmt = mysqli_prepare($link, $sql)){
            // Bind variables to the prepared statement as parameters
            mysqli_stmt_bind_param($stmt, "ssssi", $param_user_address, $param_user_city, $param_user_country, $param_postal_code, $param_id);

            // Set parameters
            $param_user_address = $new_user_address;
            $param_user_city = $new_user_city;
            $param_user_country = $new_user_country;
            $param_postal_code = $param_postal_code;
            $param_id = $_SESSION["id"];

            // Attempt to execute the prepared statement
            if(mysqli_stmt_execute($stmt)){
                // After udpating everythin.
                header("location: profile.php");
                exit();
            } else{
                echo "Oops! Something went wrong. Please try again later.";
            }
        }
        mysqli_stmt_close($stmt);
        // Close statement



    // Close connection
    mysqli_close($link);
}

?>
<br><br><br><br>
<div class="container text-white">
<div class="container px-5"> 
      <h1 class="display-2 black-neon text-center" style="font-family: 'Bungee';">Rest your password!
</h1><br><br>



        <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
           <div class="form-group <?php echo (!empty($new_user_address_err)) ? 'has-error' : ''; ?>">
                <label>Address</label>
                <div class="bg-white d-flex">
                <input type="text" class="form-control form-control-lg" name="new_user_city" value="<?php echo $new_user_address; ?>">
                   <div class="align-items-end"><a class="btn btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">
                       <span class="oi oi-person" ></span></a></div></div>
                    <span class="form-text"><?php echo $new_user_address_err; ?></span>
              </div>

            <div class="form-group <?php echo (!empty($new_user_city_err)) ? 'has-error' : ''; ?>">
                <label>City</label>
                <div class="bg-white d-flex">
                <input type="text" class="form-control form-control-lg" name="new_user_city" value="<?php echo $new_user_city; ?>">
                   <div class="align-items-end"><a class="btn btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">
                       <span class="oi oi-person" ></span></a></div></div>
                    <span class="form-text"><?php echo $new_user_city_err; ?></span>
              </div>

            <div class="form-group <?php echo (!empty($new_user_country_err)) ? 'has-error' : ''; ?>">
                <label>Country</label>
                <div class="bg-white d-flex">
                <input type="text" class="form-control form-control-lg" name="new_user_country" value="<?php echo $new_user_country; ?>">
                   <div class="align-items-end"><a class="btn btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">
                       <span class="oi oi-person" ></span></a></div></div>
                    <span class="form-text"><?php echo $new_user_country_err; ?></span>
              </div>
            <div class="form-group <?php echo (!empty($new_postal_code_err)) ? 'has-error' : ''; ?>">
                <label>Postal Code</label>
                <div class="bg-white d-flex">
                <input type="text" class="form-control form-control-lg" name="new_postal_code" value="<?php echo $new_postal_code; ?>">
                   <div class="align-items-end"><a class="btn btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">
                       <span class="oi oi-person" ></span></a></div></div>
                    <span class="form-text"><?php echo $new_postal_code_err; ?></span>
              </div>

  <input class="btn btn-outline-success btn-lg" type="submit" value="reset">

</form>
    </div>
      </div>
<br><br><br>
<?php 
    include_once ("footer.php");
?>

试试这个：

$sql = "UPDATE users SET 
user_address = ?,
user_city = ?, 
user_country = ?, 
postal_code = ?' 
WHERE id = ?";

将操作顺序更改为：

// Set parameters
$param_user_address = $new_user_address;
$param_user_city = $new_user_city;
$param_user_country = $new_user_country;
$param_postal_code = $param_postal_code;
$param_id = $_SESSION["id"];
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "ssssi", $param_user_address, $param_user_city, $param_user_country, $param_postal_code, $param_id);

当我使用：$sql=“UPDATE users SET user_address=？，user_city=？，user_country=？，postal_code=？”，其中id=？”；城市和国家得到更新，而地址和邮政编码没有得到更新，关于“未定义索引”错误：我相信你会得到这个错误，因为你在检查值是否为空之前尝试
trim（）
值。分配值并将其设置为绑定sql时的顺序很重要。它工作正常，我的新邮政编码不断更新为-Empty字段（例如，我在myphpadmin:postall\u code-3322SS中设置，但当我使用resetinfo.php时，它会给出一个空字段），您能帮我找到错误的位置吗？其他字段正在升级。这只是邮政编码。编辑：我发现了错误，这是邮政编码$param，谢谢您的帮助，先生！！！
// Set parameters
$param_user_address = $new_user_address;
$param_user_city = $new_user_city;
$param_user_country = $new_user_country;
$param_postal_code = $param_postal_code;
$param_id = $_SESSION["id"];
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "ssssi", $param_user_address, $param_user_city, $param_user_country, $param_postal_code, $param_id);