php - 注意第21行的: Undefined index: image in D:\wamp\www\onlinesShop\newitem. php

Question

我想用 php 和 msqli 在我的 phpMYadmin 中上传图片但是遇到了提到的错误所以几乎所有东西都会插入除了图片。我认为一切都很好不知道问题出在哪里请帮忙:(

这是 php:

<?php
        if(isset($_POST['submit'])){
        $Name=$_POST['Name'];
        $Desc=$_POST['Desc'];
        $Image=$_FILES['image']['tmp_name']; //get error in this line

        echo $_FILES['image']['error'];//get error in this line


        $sql="INSERT INTO `items`(`Name`,`Description`, `image`) 
        VALUES('$Name','$Desc','$Image')";


        if(mysqli_query($con,$sql)){ 
        echo "new record";
        }
        else{echo"Wrong";}
        mysqli_close($con);
        }
        ?>

html:

<form action="http://localhost/onlinesShop/newitem.php" method="POST" > 
            <table  id='table_admin'>
                <tbody>
                  <tr>
                    <td width="116" height="50" align="left">Name</td>
                    <td width="466"><input name="Name" type="text" id="Name" title="Name" maxlength="200"></td>
                  </tr>
                  <tr>
                    <td height="290">Description</td>
                    <td><textarea name="Desc" cols="40" rows="15" id="textarea"></textarea></td>
                  </tr>
                  <tr>
                    <td>Image</td>
                    <td width="80"><input type="file" name="image" id="fileField" ></td>
                  </tr>
                  <tr>
                    <td>&nbsp;</td>
                    <td><input type="submit" name="submit" id="submit" value="Upload"></td>
                  </tr>
                </tbody>
        </form>
            </table>
        </div>

Answer 1

始终确保设置 <form>与 enctype="multipart/form-data"当您处理文件上传时:

<form action="newitem.php" method="post" enctype="multipart/form-data">

然后像往常一样，通过$_FILES继续处理:

if(isset($_POST['submit'])){
    $Name=$_POST['Name'];
    $Desc=$_POST['Desc'];
    $Image=$_FILES['image']['tmp_name'];

    $sql = 'INSERT INTO items (Name, Description, image) VALUES(?, ?, ?)';
    $insert = $con->prepare($sql);
    $insert->bind_param('sss', $Name, $Desc, $Image);
    $insert->execute();

    if($insert->num_rows > 0) {
        echo 'insert okay!';
    }
}