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php - 来自表单的数据不会传递到 MySQL 数据库

转载 作者:可可西里 更新时间:2023-11-01 08:38:40 24 4
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我已经使用各种在线教程成功地创建了一个 php 登录表单。但现在我希望用户能够将设备添加到他们的帐户,如果您愿意的话,这将链接到他们在注册网站时提供给他们的用户 ID。

我创建了第二个表来保存设备上的数据,其中包括该设备自己的自动递增 ID,这是主键。该表还有另一列作为外键的用户 ID。我想显示哪个用户拥有该特定设备。我是 PHP 和 MySQL 的新手,我似乎无法像以前使用注册表单那样获取此特定表单来将数据提交到 MySQL 数据库。

我将数据库详细信息保存在一个单独的文件夹中,并在需要时引用它:

<?php

$servername = "xxx";
$dBUsername = "xxx";
$dBPassword = "xxx";
$dBName = "xxx";

$conn = mysqli_connect($servername, $dBUsername, $dBPassword, $dBName);

if (!$conn) {
die("Connection failed: ".mysqli_connect_error());
}

然后这是我的表单,供用户在登录后向其帐户添加新设备(跟踪器):

<?php
require "header.php";
?>

<main>
<?php
if (isset($_SESSION['userId'])) {
echo '<form action="includes/logout.inc.php" method="post">
<button type="submit" name="logout-submit">Log Out</button>
</form>';

echo '<form action="includes/trackerSub.inc.php" method="post">
<input type="text" name="trackeruid" placeholder="Tracker Name...">
<input type="text" name="trackerType" placeholder="Tracker Type...">
<button type="submit" name="tracker-submit">Submit</button>
</form>';
}
else {
echo '<form action="includes/login.inc.php" method="post">
<input type="text" name="mailuid" placeholder="Username/E-mail...">
<input type="password" name="pwd" placeholder="Password...">
<button type="submit" name="login-submit">Login</button>
</form>
<a href="signup.php">Sign Up</a>';
}
?>
</main>


<?php
require "footer.php"
?>

在 require header.php 中我保留了 session_start():

<?php
session_start();
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Mother Bird</title>
<link rel="stylesheet" href="master.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>

最后在 trackerSub.inc.php 中,这是我的表单操作:

<?php

if (isset($_POST['tracker-submit'])) {

require 'dbh.inc.php';

$trackeruid = $_POST['trackeruid'];
$trackerType = $_POST['trackerType'];
$idUser = $_SESSION['userId'];

if (empty($trackeruid) || empty($trackerType)) {
header("Location: ../dashboard.php?error=emptyfields");
}
else if (!preg_match("/^[a-zA-Z0-9]*$/", $trackeruid)) {
header("Location: ../dashboard.php?error=invalidtrackeruid");
exit();
}
else {
$sql = "INSERT INTO trackers (idUsers, uidTracker, trackerType) VALUES (?, ?, ?)";
$stmt = mysqli_stmt_init($conn);
if (!mysqli_stmt_prepare($stmt, $sql)) {
header("Location: ../dashboard.php?error=sqlerror");
exit();
}
else {
mysqli_stmt_bind_param($stmt, "iss", $idUser, $trackeruid, $trackerType);
mysqli_stmt_execute($stmt);
header("Location: ../dashboard.php?signup=success");
exit();
}
}
mysqli_stmt_close($stmt);
mysqli_close($conn);

}
else {
header("Location: ../dashboard.php");
exit();
}

The trackers table in phpMyAdmin looks like this

The users table

任何帮助将不胜感激,正如我之前所说,我是 PHP 和 MySQL 的新手,过去两天我一直在尝试修复这些问题并进行研究,但我不太明白我哪里出了问题。

非常感谢,马达莫特

最佳答案

试试这个让我知道它是否有效

if(isset($_POST['tracker-submit']))
{

require 'dbh.inc.php';

$trackeruid = $_POST['trackeruid'];
$trackerType = $_POST['trackerType'];
$idUser = $_SESSION['userId'];

if(empty($trackeruid) || empty($trackerType))
{
header("Location: ../dashboard.php?error=emptyfields");
}
else if(!preg_match("/^[a-zA-Z0-9]*$/", $trackeruid))
{
header("Location: ../dashboard.php?error=invalidtrackeruid");
exit();
}
else
{
$sql = "INSERT INTO trackers (idUsers, uidTracker, trackerType) VALUES ('$idUser', '$trackeruid', '$trackerType')";
$res = mysqli_query($conn,$sql);
if(!$res)
{
header("Location: ../dashboard.php?error=sqlerror");
exit();
}
else
{

header("Location: ../dashboard.php?signup=success");
exit();
}
}

mysqli_close($conn);

}
else {
header("Location: ../dashboard.php");
exit();
}

关于php - 来自表单的数据不会传递到 MySQL 数据库,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54468048/

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