使用SwiftMailer和PHP检索要附加到电子邮件的文件名

我昨天问了这个问题并得到了一个建议并使用了它,但由于某种原因它没有用.
因此,我需要检索用户从 HTML表单上传到我的服务器的文件的名称.我需要将此文件附加到由 PHP / SwiftMailer发送的电子邮件中.
这是我的代码,文件上传部分：

//File upload

// Where the file is going to be placed 
$target_path = "uploads/";

// Add the original filename to our target path.  
//Result is "uploads/filename.extension" 
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path)) {
    echo "The file ".  basename( $_FILES['uploadedfile']['name']). 
    " has been uploaded";
} else{
    echo "There was an error uploading the file,please try again!";
}   

//End of file upload

这是文件附加部分：

//Create the attachment
$attachment = Swift_Attachment::fromPath($_FILES['uploadedfile']['tmp_name']);

为什么不从服务器获取文件？
这是错误消息,看起来它正在尝试在错误的目录中找到该文件：

Warning: fopen(/tmp/phpHJdw0H)
[function.fopen]: failed to open
stream: No such file or directory in
/home/myserver/mydomain.com/Hawaii/html/swift-mailer/lib/classes/Swift/ByteStream/FileByteStream.php
on line 131
Fatal error: Uncaught exception ‘Swift_IoException’ with message ‘Unable to open file for reading [/tmp/phpHJdw0H]’ in /home/myserver/mydomain.com/Hawaii/html/swift-mailer/lib/classes/Swift/ByteStream/FileByteStream.php:133 Stack trace: #0
etc.

谢谢！

$attachment = Swift_Attachment::fromPath($target_path);