谷歌的GMail API下载附件

Question

I'm using the PHP SDK for the new Gmail API. How do I fetch an attachment from an email?

Here is the API documentation, but in this instance, it's missing example for PHP. Although I have seen people achieving this with PHP.

EDIT:

This is what I have so far, unsure if it's correct:

$attachmentData = $service->users_messages_attachments->get($emailAccount, $messageId, $attachmentId);

$myfile = fopen("excel.xlsx", "w");
fwrite($myfile, $attachmentData);
fclose($myfile);

Answer 1

Firstly we need to get the data from the attachment object:

 $attachmentObj = $service->users_messages_attachments->get($emailAccount, $messageId, $attachmentId);
 $data = $attachmentObj->getData(); //Get data from attachment object

Then before writing to file, convert the data to standard RFC 4648 base64-encoding:

 $data = strtr($data, array('-' => '+', '_' => '/'));
 $myfile = fopen("excel.xlsx", "w+");;
 fwrite($myfile, base64_decode($data));
 fclose($myfile);

It now works!