php - bool 值错误 - mysqli

Question

我在此代码中遇到错误(代码中的注释):

if (checkBd ($sql, $db, $valor, $codePass)){

    ($sql = $db->prepare("UPDATE users SET activation = ? WHERE activationLink=?"));

    $valor="1";
    $sql->bind_param('is', $valor, $codePass);

    $sql->execute();

    $sql->bind_result($valor, $codePass); //Warning: mysqli_stmt::bind_result() [mysqli-stmt.bind-result]: Number of bind variables doesn't match number of fields in prepared statement 

    if ($sql->fetch()) {
        header("location: index.php");
        return true;
    }
    else {
        echo "no";
        return false;
    }
$sql->close();
$db->close();
}

脚本中可能存在什么问题？另一个问题，这种更新 bool 值的方法是否正确？

谢谢

Answer 1

我无法从 UPDATE 查询中检索结果。

解决了

    if (checkBd ($sql, $db, $codePass)){

    $valor=1;
    ($sql = $db->prepare("UPDATE users SET activation=? WHERE activationLink=?"));

    $sql->bind_param('is', $valor, $codePass);

    $sql->execute();
    header("location: index.php");
    return true;
}
else {
    echo "no";
    return false;
}
$sql->close();
$db->close();