Question

我收到以下错误：

＆＃34;命令不同步;你现在不能运行这个命令＆＃34;

关于此代码：

$check = $dbc->prepare("SELECT field FROM table WHERE field = ?");
mysqli_stmt_bind_param($check, "s", $value1);
mysqli_stmt_execute($check);
mysqli_stmt_bind_result($check, $info);
mysqli_stmt_fetch($check);

if ( $info == $static_value ) {

    $update = $dbc->prepare("UPDATE table SET field = 'valued' WHERE(field1 = ? AND field2 = ?)LIMIT 1");
    mysqli_stmt_bind_param($update, "ss", $value1, $value2);
    mysqli_stmt_execute($update);

代码看起来正确，我错了吗？

Answer 1

update查询看起来非常错误。请尝试以下方法，

您的旧update，

$update = $dbc->prepare("UPDATE table SET field = 'valued' WHERE(field1 = ? AND field2 = ?)LIMIT 1");
mysqli_stmt_bind_param($update, "ss", $value1, $value2);
mysqli_stmt_execute($update);

您的新$update，

$update = mysqli_prepare($dbc, "UPDATE `yourTableName` SET `field` = 'valued' WHERE field1 = ? AND field2 = ?");

LIMIT可以与UPDATE一起使用，但仅与行数一起使用。

修改1

您似乎将OO MySQLi与procedural混合在一起，请阅读this页。

修改2

您的代码存在很多问题。

当他们超出$email的范围时，您试图访问$key和if，因此我添加了新变量。
您继续（如上所述）将OO与procedural混合。

我在尝试执行$update时添加了一些调试。

<?php

$email;
$key;

if (isset($_GET['email']) && preg_match('/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/', $_GET['email'])) {
    $email = $_GET['email'];
}
if (isset($_GET['key']) && (strlen($_GET['key']) == 32)) //The Activation key will always be 32 since it is MD5 Hash
    {
    $key = $_GET['key'];
}


if (isset($email) && isset($key)) {
    $check_code = mysqli_prepare($dbc, "SELECT Activation FROM members WHERE Email = ?");
    mysqli_stmt_bind_param($check_code, "s", $email);
    mysqli_stmt_execute($check_code);
    mysqli_stmt_bind_result($check_code, $activation);
    mysqli_stmt_fetch($check_code);

    if ($activation == $key) {

        // Update the database to set the "activation" field to null

        $update = mysqli_prepare($dbc, "UPDATE `members` SET `Activation` = 'Activated' WHERE `Email` = ? AND `Activation` = ?");
        mysqli_stmt_bind_param($update, "ss", $email, $key);
        mysqli_stmt_execute($update);

        if (!mysqli_stmt_execute($update) ) {
            die("Error: " . mysqli_stmt_error($update));
        }   


        // Print a customized message:
        if (mysqli_affected_rows($dbc) == 1) { //if update query was successfull

            echo '<div class="success">Your account is now active. You may now <a href="login.php">Log in</a></div>';

        } else {
            echo '<div class="errormsgbox">Oops !Your account could not be activated. Please recheck the link or contact the system administrator.</div>';
            echo '<br/> ' . $dbc->error;

        }

        mysqli_close($dbc);

    } else {

        echo "Parameters wrong, wrong link?";

    }

} else {
    echo '<div class="errormsgbox">Error Occured .</div>';
}
?>

Answer 2

首先你要混合程序和OOP，其次你没有关闭你的连接，这是另一个错误:)

$check=$dcv->prepare('SELECT field FROM table where field=?');
$check->bind_param('s',$value1);
$check->execute();
$check->bind_result($info);
$check->fetch();
$check->close();
if($info==$static_value){
    $update=$dvc->prepare('UPDTATE table SET field='valued' WHERE field1=? AND field2=?');
    $update->bind_param('ss',$value1,$value2);
    $result=$update->execute();
    $update->close();
}

Mysqli命令不同步

2 个答案: