Web Development: How can I allow a user to upload files directly to my CDN (Cachefly)?

Question

I have a PHP web-application that allows users to upload images to my web site. I'm doing this using a simply HTML <form enctype="multipart/form-data">

However, instead of having those images uploaded to my web server - I would to have those images uploaded directly to my CDN (Cachefly - which is another server).

Is this possible ... to have a web-application allow a user to upload images directly to another server?

In case it helps, here's my PHP code:

$target_path = "/home/www/example.com/uploads/";
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']); 

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
    // file has been uploaded **LOCALLY**
    // HOWEVER, instead of it being upload locally, I would like the file 
    // to be directly uploaded to the CDN ('other' server)
    ...
} else{
    // error: file did not get uploaded correctly
    ....
}

Answer 1

i think in case of a CDN ... u will first have to receive files on ur server and then using the CDN API upload to their 'bucket'. i dont think u can upload directly to a CDN unless there is a way to map it as a directory on ur server.

Answer 2

• Moving / Uploading a file to a service or for you non-direct-accesable server is usually done by using the provider's API
• Moving / Uploading a file to a server 'owned' by yourself can be done by using PHP + FTP extensions (for more information: pear.php.net or pecl.php.net)
• Moving / Uploading a file to a server 'owned' by yourself and being one of many in a cluster is usually done by uploading the file temporary on 1 server and afterwards a .sh, .bash or whatever is called which activates further transfer processes to another server.

Answer 3

I don't think it's possible to directly upload to another server, but I could be wrong. I had a similar problem, and I used PHP's FTP capabilities (http://us3.php.net/manual/en/book.ftp.php). I still used my server as a middle-man, meaning I uploaded the files to my server, then FTP transferred them to the target server, and then deleted the file from my server.