我正在尝试创建一个表单,提交时将更新包含用户信息的数据库.我正在使用 PDO 和事务,但在提交表单时不断收到以下错误
I'm trying to create a form that when submitted will update a database that contains user's information. I am using PDO and transactions but keep getting the following error when the form is submitted
PHP Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: no parameters were bound in /var/www/html/resources/memfuncs.php on line 75
这是我的代码:
Settings.php
if(isset($_POST['username'])){
$id = $_SESSION['id'];
$username = $_POST['username'];
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$email = $_POST['email'];
$password1 = $_POST['password1'];
$password2 = $_POST['password2'];
if ($password1 === $password2){
updatesettings($id, $username, $first_name, $last_name, $email, $password);
}
}
我没有包含表单的 HTML,尽管它也在上面的文件中.
I haven't included the HTML for the form, although it is also in the above file.
memfuncs.php
function updatesettings($id, $username, $first_name, $last_name, $email){
global $db;
$db->beginTransaction();
try {
// UPDATE USERNAME
$st2 = $db->prepare("UPDATE users SET username = :username WHERE id = :id");
$st2->execute();
$st2->bindParam (":username", $username, PDO::PARAM_STR);
$st2->bindParam (":id", $id, PDO::PARAM_INT);
//UPDATE FIRST + LAST NAME
$st = $db->prepare("UPDATE users SET first_name = :first_name AND last_name = :last_name WHERE id = :id");
$st->execute();
$st->bindParam (":first_name", $first_name, PDO::PARAM_STR);
$st->bindParam (":last_name", $last_name, PDO::PARAM_STR);
$st->bindParam (":id", $id, PDO::PARAM_INT);
// UPDATE Email
$st3 = $db->prepare("UPDATE users SET email = :email WHERE id = :id");
$st3->execute();
$st3->bindParam(":email", $email, PDO::PARAM_STR);
$st3->bindParam(":id", $id, PDO::PARAM_INT);
// COMMIT CHANGES
$db->commit();
} catch (Exception $error){
$db->rollBack();
echo "Failed: " . $error->getMessage();
}
}
我做错了什么?
你执行得早,execute()
应该是你准备和绑定后做的最后一件事:
You executed to early, execute()
should be the last thing you do after preparing and binding:
$st3 = $db->prepare("UPDATE users SET email = :email WHERE id = :id");
$st3->bindParam(":email", $email, PDO::PARAM_STR);
$st3->bindParam(":id", $id, PDO::PARAM_INT);
$st3->execute();
因此,当您 execute()
时,请在 3 个地方修复此问题,如果您要捕获异常,请捕获 PDOException
并放入 $db->beginTransaction();
在 try 块中,因为这可能会失败!
So fix this in the 3 places when you execute()
, also if you're going to catch exceptions catch PDOException
and put $db->beginTransaction();
in the try block because that can fail!
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