PHP的上傳腳本不上傳-而是添加到數據庫？

Question

當我嘗試制作用於用戶個人資料的橫幅藝術品上傳系統時，出現一個奇怪的問題。

我一直在尋找答案，但沒有一個人能解決。

這不是權限問題，在上載文件夾和upload.php文件中，我的chmod是755。

下面的代碼：

if ($_POST && !empty($_FILES)) {
$formOk = true;

//Assign Variables
$path = $_FILES['image']['tmp_name'];
$name = $_FILES['image']['name'];
$size = $_FILES['image']['size'];
$type = $_FILES['image']['type'];

if ($_FILES['image']['error'] || !is_uploaded_file($path)) {
    $formOk = false;
    echo "Error: Error in uploading file. Please try again.";
}

//check file extension
if ($formOk && !in_array($type, array('image/png', 'image/x-png', 'image/jpeg', 'image/pjpeg', 'image/gif'))) {
    $formOk = false;
    echo "Error: Unsupported file extension. Supported extensions are JPG / PNG.";
}
// check for file size.
if ($formOk && filesize($path) > 500000) {
    $formOk = false;
    echo "Error: File size must be less than 3 MB.";
}

if ($formOk) {
    // read file contents
    $content = file_get_contents($path);

    //connect to mysql database
    if ($conn = mysqli_connect('localhost', 'hidden', 'hidden', 'hidden')) {
        $user_id = mysqli_real_escape_string($conn, $_POST['user_id']);
        $username = mysqli_real_escape_string($conn, $_POST['username']);
        $content = mysqli_real_escape_string($conn, $content);
    $sql = "insert into banners (user_id, username, name, size, type, content) values ('{$user_id}','{$username}','{$name}', '{$size}', '{$type}', '{$content}')";

        if (mysqli_query($conn, $sql)) {
            $uploadOk = true;
            $imageId = mysqli_insert_id($conn);
        } else {
            echo "Error: Could not save the data to mysql database. Please try again.";
        }

        mysqli_close($conn);
    } else {
        echo "Error: Could not connect to mysql database. Please try again.";
    }
}

形式為：

        <form method="post" enctype="multipart/form-data" action="<?=$_SERVER['PHP_SELF']?>" >
      <div>
        <h3>Image Upload:</h3>
      </div>
      <div>
        <label>Image</label>
        <img src="<?php print_r($path); ?>"/>
        <?php print_r($_FILES); ?>
        <input type="text" name="user_id" value="<?php echo $user->data["user_id"]; ?>" readonly/>
        <br />
        <input type="text" name="username" value="<?php echo $user->data["username"]; ?>" readonly/>            
        <input type="hidden" name="MAX_FILE_SIZE" value="500000">
        <input type="file" name="image" />
        <input name="submit" type="submit" value="Upload">
      </div>
    </form>     

我在同一個文件upload.php中包含表單，以及我的包含頁眉和頁腳。

所以基本上它會將數據存儲到數據庫中，但是不會上傳任何內容，我還檢查了phpinfo等，並且一切正常，打開了，並且phpinfo中的文件限制為64mb，所以我不不明白為什么它不會上傳？

任何幫助，將不勝感激，謝謝

Answer 1

簡單：您沒有將文件移動到任何地方，就像move_uploaded_file() 。

• http://php.net/manual/zh/features.file-upload.post-method.php

基於以下摘自手冊的示例：

<?php
// In PHP versions earlier than 4.1.0, $HTTP_POST_FILES should be used instead
// of $_FILES.

$uploaddir = '/var/www/uploads/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);

echo '<pre>';
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
    echo "File is valid, and was successfully uploaded.\n";
} else {
    echo "Possible file upload attack!\n";
}

echo 'Here is some more debugging info:';
print_r($_FILES);

print "</pre>";

並檢查錯誤。

• http://php.net/manual/en/function.error-reporting.php

Answer 2

我只想發布我的操作方法，這要感謝Fred和其他人發表的其他評論:)

                //Assign Variables
            $username = $user->data['username'];
            #mkdir("uploads/".$username,0755);
            $target_dir = "../uploads/$username-";
            $path = $target_dir . basename($_FILES['image']['tmp_name']);
            $name = $target_dir . basename($_FILES['image']['name'].$user_id);
            $size = $_FILES['image']['size'];
            $type = $_FILES['image']['type'];



                if (move_uploaded_file($_FILES['image']['tmp_name'], $name)) {
            echo "<h2>Thank you for uploading your banner art - File is valid, and was successfully uploaded.\n</h2>";
        } else {
            echo "Possible file upload attack!\n";
        }

所以我也做到了，所以現在它也將用戶名放在上傳的圖像名稱之前。

形式幾乎相同，我現在也將其制成，以便在漂亮的花式框中打開上載和更新：)

https://gyazo.com/e12a03ce01d8f503b8fa2e79f5605809

再次感謝大家:)