Php 我的数据库赢了'；i don’我提交表格时不要插入我的记录

我目前正在做我的fyp。我是新的PHP编码。我不知道为什么在我提交表格时，数据不会插入我的数据库。我在表格中添加的照片可以存储到目标文件中。请帮帮我

这是我的表单restaurant-add.php

<form action="php/addmenu.php" method="POST" enctype="multipart/form-data">
    <div class="box-body">
        <div class="form-group">
            <label>Restaurant Name</label>
            <input class="form-control" type="text" name="restaurant_name">
        </div>
        <div class="form-group">
            <label>Password</label>
            <input class="form-control" type="text" name="restaurant_password">
        </div>
        <div class="form-group">
            <label for="exampleInputFile">Restaurant Logo</label>
            <input id="exampleInputFile" type="file" name="restaurant_logo">
        </div>
        <div class="form-group">
            <label>Contact Number</label>
            <input class="form-control" type="text" name="restaurant_contactnum">
        </div>
        <div class="form-group">
            <label>Address</label>
            <input class="form-control" type="text" name="restaurant_address" >
        </div>

        <div class="box-footer">
            <button class="btn btn-primary" type="submit" name="submit">Submit</button>
            <button class="btn btn-primary" type="reset">Reset</button>
        </div>
</form>

餐厅名称
密码
餐厅标志
联系电话
地址
提交
重置

提交表单addmenu.php时的php文件

<?php
include 'db.php';
//define other variables with submitted values from $_POST
$name = $_POST['restaurant_name'];
$contactnum = $_POST['restaurant_contactnum'];
$address = $_POST['restaurant_address'];

//md5 hash password for security
$password = md5($_POST['restaurant_password']);

$uploadedfile = $_FILES["restaurant_logo"]["tmp_name"];
$allowedExts = array("png","jpg","jpeg"); /* ACCEPTED FILE FORMAT */
$filename = $_FILES["restaurant_logo"]["name"]; /* NAME OF THE FILE */
$extension = pathinfo($filename, PATHINFO_EXTENSION); /* GET THE FILE EXTENSION */
$extension = strtolower($extension); /* LOWER THE STRINGS OF THE EXTENSION */

if (in_array($extension,$allowedExts)) { /* IF FILE IS INDEED AN IMAGE */

    $path = "restaurantlogo/".$filename; /* DIRECTORY WHERE YOU WANT TO STORE THE IMAGE ALONG WITH THE FILE NAME */
    move_uploaded_file($uploadedfile,$path);

    //set session variables to display on welcome page
    $_SESSION['username'] = $name;
    $_SESSION['restaurant_logo'] = $uploadedfile;

    //insert user data into database
    $sql = "INSERT INTO testingrestaurant (Logo, Name, Password, Contact Number, Address) VALUES ('$uploadedfile', '$name', '$password', '$contactnum', '$address')";

    //check if mysql query is successful
    if (($conn->query($sql) === TRUE) {
        $_SESSION['message'] = "Registration successful!"
        echo "Added ".$name." to the database!";
        echo $message;
        //redirect the user to welcome.php
        header("location: restaurant-add.php");
    }
}

“联系人号码”中有空格，这在SQL中不正确，请在数据库中使用准确的列名

这应该会有帮助。
行中：

<?php
$dbServername = "localhost";
$dbUsername = "root";
$dbPassword = "";
$dbName="food delivery";

// Create connection
$conn = mysqli_connect($dbServername, $dbUsername, $dbPassword,$dbName);

// Check connection
if (mysqli_connect_errno()) {
    $result  = 'error';
    $message = 'Failed to connect to database: ' . mysqli_connect_error();

}

echo "Connected successfully";

//define other variables with submitted values from $_POST
$name = $_POST['restaurant_name'];
$contactnum = $_POST['restaurant_contactnum'];
$address = $_POST['restaurant_address'];

//md5 hash password for security
$password = md5($_POST['restaurant_password']);

$uploadedfile = $_FILES["restaurant_logo"]["tmp_name"];
$allowedExts = array("png","jpg","jpeg"); /* ACCEPTED FILE FORMAT */
$filename = $_FILES["restaurant_logo"]["name"]; /* NAME OF THE FILE */
$extension = pathinfo($filename, PATHINFO_EXTENSION); /* GET THE FILE EXTENSION */
$extension = strtolower($extension); /* LOWER THE STRINGS OF THE EXTENSION */

if (in_array($extension,$allowedExts)) { /* IF FILE IS INDEED AN IMAGE */

    $path = "restaurantlogo/".$filename; /* DIRECTORY WHERE YOU WANT TO STORE THE IMAGE ALONG WITH THE FILE NAME */
    move_uploaded_file($uploadedfile,$path);

    //set session variables to display on welcome page
    $_SESSION['username'] = $name;
    $_SESSION['restaurant_logo'] = $uploadedfile;

    //insert user data into database
    $sql = "INSERT INTO testingrestaurant (Logo, Name, Password, ContactNumber, Address) VALUES ('$uploadedfile', '$name', '$password', '$contactnum', '$address')";

    $insert = mysqli_query($conn, $sql) or die(mysqli_error($conn));

    //check if mysql query is successful
    if ($sql) {
        $_SESSION['message'] = "Registration successful!";
        echo "Added " . $name . " to the database!";
        echo $message;
        //redirect the user to welcome.php
        header("location: restaurant-add.php");
    }

}
?>

$sql = "INSERT INTO testingrestaurant (Logo, Name, Password, Contact Number, Address) VALUES ('$uploadedfile', '$name', '$password', '$contactnum', '$address')";  

将
testingrestaurant
替换为
'testingrestaurant'
。PHP如果您使用变量，PHP仍然需要破折号。
谢谢您的回复，但在我的数据库中，它们之间有一个空格。这不是最佳做法，如果您可以在数据库中更改名称，请这样做。您还忘了包括mysqli_查询（$conn，$sql）；在你询问之后。这是将查询（$sql）发布到数据库中的一行解析错误：语法错误，C:\xampp\htdocs\FYP\php\addmenu.php中的意外“echo”（T_echo），位于第34行，它指的是这行echo“Added”$名称“转到数据库！”；我试着用谷歌搜索，但他们的情况与我不同。你可以发布当前的addmenu.php脚本吗？代码太长，直到我无法在评论框中发布，所以我会发布另一个答案。那是一堆代码。但这看起来并不是一个真正的答案。你改变了什么？为什么要解决这个问题？改变了mysqli的所有实例“改变了mysqli的所有实例”-以什么方式？为什么？这是使用mysqli的另一种方式。此格式与forma之间的区别在于，它以不同的方式调用每个mysqli函数。e、 对于连接，我从新的mysqli改为mysqli\u connect。如果你想坚持使用你的方法，你必须寻找使用你的方法调用mysqli_查询的正确方法。“这是使用mysqli的另一种方法”-为什么它能解决问题？OP调用
->query
的方式有什么问题？危险：您正在使用并且需要删除您用户的密码。危险：您很容易受到需要从中删除的密码的攻击。
如果（$conn->query（$sql）==TRUE）{
-这是真的吗？我猜不是。有一个错误函数可以告诉你数据库服务器报告了什么错误。使用它！
<?php
$dbServername = "localhost";
$dbUsername = "root";
$dbPassword = "";
$dbName="food delivery";

// Create connection
$conn = mysqli_connect($dbServername, $dbUsername, $dbPassword,$dbName);

// Check connection
if (mysqli_connect_errno()) {
    $result  = 'error';
    $message = 'Failed to connect to database: ' . mysqli_connect_error();

}

echo "Connected successfully";

//define other variables with submitted values from $_POST
$name = $_POST['restaurant_name'];
$contactnum = $_POST['restaurant_contactnum'];
$address = $_POST['restaurant_address'];

//md5 hash password for security
$password = md5($_POST['restaurant_password']);

$uploadedfile = $_FILES["restaurant_logo"]["tmp_name"];
$allowedExts = array("png","jpg","jpeg"); /* ACCEPTED FILE FORMAT */
$filename = $_FILES["restaurant_logo"]["name"]; /* NAME OF THE FILE */
$extension = pathinfo($filename, PATHINFO_EXTENSION); /* GET THE FILE EXTENSION */
$extension = strtolower($extension); /* LOWER THE STRINGS OF THE EXTENSION */

if (in_array($extension,$allowedExts)) { /* IF FILE IS INDEED AN IMAGE */

    $path = "restaurantlogo/".$filename; /* DIRECTORY WHERE YOU WANT TO STORE THE IMAGE ALONG WITH THE FILE NAME */
    move_uploaded_file($uploadedfile,$path);

    //set session variables to display on welcome page
    $_SESSION['username'] = $name;
    $_SESSION['restaurant_logo'] = $uploadedfile;

    //insert user data into database
    $sql = "INSERT INTO testingrestaurant (Logo, Name, Password, ContactNumber, Address) VALUES ('$uploadedfile', '$name', '$password', '$contactnum', '$address')";

    $insert = mysqli_query($conn, $sql) or die(mysqli_error($conn));

    //check if mysql query is successful
    if ($sql) {
        $_SESSION['message'] = "Registration successful!";
        echo "Added " . $name . " to the database!";
        echo $message;
        //redirect the user to welcome.php
        header("location: restaurant-add.php");
    }

}
?>

$sql = "INSERT INTO testingrestaurant (Logo, Name, Password, Contact Number, Address) VALUES ('$uploadedfile', '$name', '$password', '$contactnum', '$address')";