图片上传无效

Question

伙计们..我想将图像上传到某个文件夹名称“ uploads”，然后在数据库中插入该图像的名称，问题是他没有上传图像。

所以我有这个基本的HTML代码：

 <form action="newimage.php" method="POST"> <div class="row"> <div class="col-md-6 col-sm-6 col-xs-12"> <div class="form-group"> <input type="file" name="pic" id="pic"> </div> <button type="submit" class="btn btn-success">Submit</button> </div> </div> </form> 

这是我的PHP页面

 <?php $mysqli = new mysqli("localhost", "root", "", "homepage"); if (mysqli_connect_errno()) { printf("Connect failed: %s\\n", mysqli_connect_error()); exit(); } $name = "somethinghere"; #do upload $target_dir = "uploads"; $temp = explode(".", $_FILES["pic"]["name"]); $newfilename = $target_dir . '/Foto-' . $name . '.' . end($temp); if (move_uploaded_file($_FILES['pic']['tmp_name'], $newfilename) ) { $productimage = 'Foto-' . $name . '.' . end($temp); } else { $productimage = ''; } $sql = "INSERT INTO galeria_front (image_name) VALUES ('$productimage')"; if ($mysqli->query($sql) === TRUE) { header("Location: galery.php"); } else { echo "Error: " . $sql . "<br>" . $mysqli->error; } $mysqli->close(); ?> 

如您所见，我有一个有效的连接，并尝试将productimage插入数据库表中，但是由于某种原因，它正在输入else {}并使我的productimage在数据库上为空，这意味着上述上载不起作用。

PS（请原谅我英语不好）

Answer 1

尝试添加这些

     <form action="newimage.php" method="POST" enctype="multipart/form-data">
    </form

将脚本更改为此

    <?php
    $target_dir = "uploads/";
    $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
    $uploadOk = 1;
    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
    // Check if image file is a actual image or fake image
    if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        echo "File is not an image.";
        $uploadOk = 0;
    }
    }
    // Check if file already exists
    if (file_exists($target_file)) {
    echo "Sorry, file already exists.";
    $uploadOk = 0;
    }
     // Check file size
     if ($_FILES["fileToUpload"]["size"] > 500000) {
    echo "Sorry, your file is too large.";
    $uploadOk = 0;
     }
    // Allow certain file formats
    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != 
     "jpeg"
    && $imageFileType != "gif" ) {
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;
     }
    // Check if $uploadOk is set to 0 by an error
    if ($uploadOk == 0) {
    echo "Sorry, your file was not uploaded.";
    // if everything is ok, try to upload file
    } else {
     if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) 
   {
        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been 
    uploaded.";
    } else {
        echo "Sorry, there was an error uploading your file.";
    }
    }
    ?>

https://www.w3schools.com/php/php_file_upload.asp

Answer 2

您缺少enctype =“ multipart / form-data”

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