Excerpts from two classes that I'm messing around with.

MyGlass.php

  /**
	* Download an attachment's content.
	*
	* @param string item_id ID of the timeline item the attachment belongs to.
	* @param Google_Attachment $attachment Attachment's metadata.
	* @return string The attachment's content if successful, null otherwise.
	*/
	function download_attachment($item_id, $attachment) {
		$request = new Google_HttpRequest($attachment->getContentUrl(), 'GET', null, null);
		$httpRequest = Google_Client::$io->authenticatedRequest($request);
		if ($httpRequest->getResponseHttpCode() == 200) {
				error_log("Error Downloading Attachment - HTTP ResponseCode:".$httpRequest->getResponseHttpCode());
				error_log("ContentUrl:         ".$attachment->getContentUrl());
				error_log("ContentType:        ".$attachment->getContentType());
				error_log("id                  ".$attachment->getId());
				error_log("IsProcessing:       ".(int)$attachment->getIsProcessingContent());
			return $httpRequest->getResponseBody();
		} else {
			// An error occurred.
			error_log("Error Downloading Attachment - HTTP ResponseCode:".$httpRequest->getResponseHttpCode());
			error_log("ContentUrl:         ".$attachment->getContentUrl());
			error_log("ContentType:        ".$attachment->getContentType());
			error_log("id                  ".$attachment->getId());
			error_log("IsProcessing:       ".(int)$attachment->getIsProcessingContent());
			return null;
		}
	}

notify.php

//$myGlass class is just a wrapper for mirror-client.php from google's quick-start php project'


switch ($request['collection']) {
  case 'timeline':
		foreach ($request['userActions'] as $i => $user_action) {
			if ($user_action['type'] == 'SHARE') {
				$timeline_item_id = $request['itemId'];
				$timeline_item = $mirror_service->timeline->get($timeline_item_id);
				
				error_log('Incoming Google Glass Attachment');
				$timeline_caption = $timeline_item->getText();
				
				if ($timeline_item->getAttachments() != null) {
					$attachments = $timeline_item->getAttachments();
					foreach ($attachments as $attachment){
						$myId = $timeline_item_id;
						$attachmentId = $attachment->getId();
						$contentType = $attachment->getContentType();
						$contentUrl = $attachment->getContentUrl();
						
						$isMovie = false;
						
						if ($contentType == 'video/mp4'){
							$isMovie = true;
						}
						
						error_log($contentType);
						
						//munge paths and save the file to the filesystem
						$upload_dir = get_upload_dir();
						$savePath = $upload_dir['path'];
						$fileName = 'Test_'.uniqid('', true);
						//just sets the correct extension based on mimetype
						$fileExt = getExtension($contentType);
						$finalFilePath = $savePath."/".$fileName.".".$fileExt;
							
						//save the file down to the filesystem
						$fileData = $myGlass->download_attachment($myId, $attachment);
						file_put_contents($finalFilePath, $fileData);
					}
				}

				//let the user know its been received and posted with a patch-update to their timeline
				$patch = new Google_TimelineItem();
				$patch->setText("Upload Complete! ".$timeline_item->getText());
				$mirror_service->timeline->patch($timeline_item_id, $patch);
				error_log('Finished receiving data');
				break;
			}
		}
	break;
	default:
		error_log("I don't know how to process this notification: $request");
}

cool

what function this?
any example?