Make requests and handle responses for resumable upload: Google Drive api [php]

Question

I\'m using the API Client Library for PHP (Beta) to work with google drive api, So far I can authorize and and upload a file in chuncks. According to the documentation, thes

Answer 1

On the first instance, make an upload call and get the resumeUri:

  $chunk  = fread($handle, 1*1024*1024);
  $result = $media->nextChunk($chunk);

  $resumeUri = $media->getResumeUri();
  $offset    = ftell($handle);

On the second instance use the same resumeUri to resume the upload from where we left out by calling resume() function before nextChunk() function:

 if ($resumeUri) {
    $media->resume($resumeUri);
 }

 fseek($handle, $offset);       
 $chunk = fread($handle, 1*1024*1024);

 $result = $media->nextChunk($chunk);

Repeat the process until the $result variable has truthy value.