我正在尝试在我的网页上做一个功能，将文件上传到mysql数据库，然后显示/让用户以后可以下载文件。pdf文件的上传看起来不错，但打开下载的文件时，adobe告诉我文件已损坏。当试图在浏览器中显示文件时，它表示无法打开该文件。请帮忙
上载脚本：

if(isset($_POST['submit'])){
    $name = $_FILES['myfile']['name'];
    $type = $_FILES['myfile']['type'];
    $data = file_get_contents($_FILES['myfile']['tmp_name']);
    $stmt = $pdo->prepare("INSERT INTO f_driver VALUES('', ?, 'Datablad', ?, ?, ?, NULL, ?)");
    $stmt->bindParam(1, $name);
    $stmt->bindParam(2, $type);
    $stmt->bindParam(3, $data);
    $stmt->bindParam(4, $pid);
    $stmt->bindParam(5, $uid);
    $stmt->execute();
}

下载/显示脚本（附件更改为内联）

require_once("../include/pdo_connect.php");
$id = $_GET['id'];
$table = $_GET['table'];
$stat = $pdo->prepare("SELECT * FROM $table WHERE id = ?");
$stat->bindParam(1, $id);
$stat->execute();
$row = $stat->fetch();
$name = $row['name'];
$type = $row['mime'];
$content = $row['data'];
header("Content-type: $type");
header("Content-Disposition: attachment; filename=$name");
echo $content;