How to do a POST with XML API? - php

Question

Here we see: https://developers.google.com/youtube/2.0/developers_guide_protocol_comments#Adding_a_comment
I need to do a request with XML API.
POST /feeds/api/videos/VIDEO_ID/comments HTTP/1.1
Host: gdata.youtube.com
Content-Type: application/atom+xml
Content-Length: CONTENT_LENGTH
Authorization: Bearer ACCESS_TOKEN
GData-Version: 2
X-GData-Key: key=DEVELOPER_KEY
<?xml version="1.0" encoding="UTF-8"?>
<entry xmlns="http://www.w3.org/2005/Atom"
xmlns:yt="http://gdata.youtube.com/schemas/2007">
<content>This is a crazy video.</content>
</entry>
What should I use for this?

Answer 1

You can use cURL to do this.
<?php
$data = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<entry xmlns="http://www.w3.org/2005/Atom"
xmlns:yt="http://gdata.youtube.com/schemas/2007">
<content>This is a crazy video.</content>
</entry>
XML;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'gdata.youtube.com/feeds/api/videos/VIDEO_ID/comments');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER,
array('Content-Type: application/atom+xml',
'Authorization: Bearer ACCESS_TOKEN',
'GData-Version: 2',
'X-GData-Key: key=DEVELOPER_KEY'));
$re = curl_exec($ch);
curl_close($ch);
?>

Answer 2

You'll likely find it easiest to use one of the client libraries rather than do the POST manually, because it will handle header generation, authentication, and tokens for you without a lot of hassle. A list of the client libraries is here:
https://developers.google.com/youtube/code
For example, to do a comment post with the Python client, it would look something like this (assuming you'd gone through the authentication steps, which the clients make pretty simple):
my_comment = 'what a boring test video'
video_id = '9g6buYJTt_g'
video_entry = yt_service.GetYouTubeVideoEntry(video_id=video_id)
yt_service.AddComment(comment_text=my_comment, video_entry=video_entry)
The clients for other languages follow the same structure.