Question

我使用PDO使用以下方法将我的值更新为表

形式

<form role="form" method="post" action="submitupdate.php" autocomplete="off">
   <input class="update" type="text" name="fullname"></li>
   <input class="update" type="text" name="dob"></li>
   <textarea style="width:740px;height:220px;" class="update" type="text" name="intrested"></textarea></li>
   <textarea style="width:740px;height:220px;" class="update" type="text" name="description"></textarea></li>
</form>

处理

<?php

require('includes/config.php');
//if not logged in redirect to login page
if (!$user->is_logged_in()) {
    header('Location: login.php');
}
//define page title
$title = 'Members Page';
//include header template
?>
<?php

    try {

    $username = $_SESSION['username'];
    $fullname = $_POST['fullname'];
    $dob = $_POST['dob'];
    $intrested = $_POST['intrested'];
    $description = $_POST['description'];
    $sql = "UPDATE `members`   
   SET `fullname` = :firstname,
       `dob` = :dob,
       `intrested` = :intrested,
       `description` = :description 
 WHERE `username` = :username";



    $statement = $db->prepare($sql);
    $statement->bindValue(":username", $username);
    $statement->bindValue(":fullname", $fullname);
    $statement->bindValue(":dob", $dob);
    $statement->bindValue(":intrested", $intrested);
    $statement->bindValue(":description", $description);
    $count = $statement->execute();

    $db = null;        // Disconnect
} catch (PDOException $e) {
    echo $e->getMessage();
}

使用ID使用用户名而非更新列我使用username进行更新，并使用会话调用用户名

我收到以下错误

SQLSTATE[HY093]: Invalid parameter number: parameter was not defined

有人可以帮助我

Answer 1

在设置值之前，您正在执行查询。在执行查询时，您尝试使用的值尚未设置，因此没有任何数据可以替换占位符。

这应该有效：

<?php

require('includes/config.php');
//if not logged in redirect to login page
if (!$user->is_logged_in()) {
    header('Location: login.php');
}
//define page title
$title = 'Members Page';
//include header template

try {

    $username = $_SESSION['username'];
    $fullname = $_POST['fullname'];
    $dob = $_POST['dob'];
    $intrested = $_POST['intrested'];
    $description = $_POST['description'];
    $sql = "UPDATE `members`   
   SET `fullname` = :fullname,
       `dob` = :dob,
       `inserted` = :inserted,
       `description` = :description 
 WHERE `username` = :username";



    $statement = $conn->prepare($sql);
    $params = array(
        ":username" => $username,
        ":fullname" => $fullname,
        ":dob" => $dob,
        ":inserted" => $intrested,
        ":description" => $description
    );
    $count = $statement->execute($params);

    $conn = null;        // Disconnect
} catch (PDOException $e) {
    echo $e->getMessage();
}

Answer 2

代码是否已完成？

我看到$ row但你在哪里定义$ row？

顺便说一句，在设置要使用的值之前，您正在执行查询。

用以下代码替换您的代码：

<?php

require('includes/config.php');
//if not logged in redirect to login page
if (!$user->is_logged_in()) {
    header('Location: login.php');
}
//define page title
$title = 'Members Page';
//include header template

try {



    $sql = "UPDATE `members`   
   SET `fullname` = :firstname,
       `dob` = :dob,
       `inserted` = :inserted,
       `description` = :description 
 WHERE `username` = :username";


    $username = $_SESSION['username'];
    $fullname = $row['fullname'];
    $dob = $row['dob'];
    $intrested = $row['intrested'];
    $description = $row['description'];    


    $statement = $conn->prepare($sql);
    $statement->bindValue(":username", $username);
    $statement->bindValue(":fullname", $fullname);
    $statement->bindValue(":dob", $dob);
    $statement->bindValue(":inserted", $intrested);
    $statement->bindValue(":description", $description);
    $count = $statement->execute();

    $conn = null;        // Disconnect
} catch (PDOException $e) {
    echo $e->getMessage();
}

使用PDO错误更新到数据库

2 个答案: