Question

What i really want to do is:

• User will upload to script from a html page
• The script will login and return back the link

Well, all can be easily done with the help of curl and accepting file through multipart post.

But the problem here is that it will start uploading the file from server to another through curl after all upload is done 🙁 So that will take a long process.
I was wondering whether its possible to make it like as user uploads files, it also keep sending the data in chunks like downloading a file

I am not sure whether this is even possible with php. If not, any other way through which this can be made possible

Answer 1

You can do this using cURL:

// Open a stream so that we stream the image download
$localFile = $_FILES[$fileKey]['tmp_name'];

$stream = fopen($localFile, 'r');

// Create a curl handle to upload to the file server     
$ch = curl_init($fileServer);
// Send a PUT request
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
// Let curl know that we are sending an entity body
curl_setopt($ch, CURLOPT_UPLOAD, true);
// Let curl know that we are using a chunked transfer encoding
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Transfer-Encoding: chunked'));
// Use a callback to provide curl with data to transmit from the stream
curl_setopt($ch, CURLOPT_READFUNCTION, function($ch, $fd, $length) use ($stream) {
    return fread($stream, $length) ? '';
});

curl_exec($ch);