fetch all youtube videos using curl - php

Question

I'm a beginner at PHP. I have one task in my project, which is to fetch all videos from a YouTube link using curl in PHP. Is it possible to show all videos from YouTube?
I found this code with a Google search:
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.youtube.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$contents = curl_exec ($ch);
echo $contents;
curl_close ($ch);
?>
It shows the YouTube site, but when I click any video it will not play.

Answer 1

You can get data from youtube oemebed interface in two formats Xml and Json which returns metadata about a video:
http://www.youtube.com/oembed?url={videoUrlHere}&format=json
Using your example, a call to:
http://www.youtube.com/oembed?url=http://www.youtube.com/watch?v=B4CRkpBGQzU&format=json
So, You can do like this:
$url = "Your_Youtube_video_link";
Example :
$url = "http://www.youtube.com/watch?v=m7svJHmgJqs"
$youtube = "http://www.youtube.com/oembed?url=" . $url. "&format=json";
$curl = curl_init($youtube);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$return = curl_exec($curl);
curl_close($curl);
$result = json_decode($return, true);
echo $result['html'];
Try it...Hope it will help you.

Answer 2

You could use curl to retrieve the Google main page (or an alternative page) and parse the returned html using a library such as html5lib. If you wanted to try this approach the first step could be to 'view source' on the relevant page and look at how the links are structured.
A more elegant way to approach the problem could be to use the Youtube API (a way to interact with the Youtube system), which may allow you to retrieve the links directly. e.g it may be possible to just ask the Youtube API to send you the links. Try this.

Answer 3

You can also get all youtube's channel videos using file_get_contents
bellow is sample and working code
<?php
$Youtube_API_Key = ""; // you can obtain api key : https://developers.google.com/youtube/registering_an_application
$Youtube_channel_id = "";
$TotalVideso = 50; // 50 is max , if you want more video you need Youtube secret key.
$order= "date"; ////allowed order : date,rating,relevance,title,videocount,viewcount
$url = "https://www.googleapis.com/youtube/v3/search?key=".$Youtube_API_Key."&channelId=".$Youtube_channel_id."&part=id&order=".$order."&maxResults=".$TotalVideso."&format=json";
$data = file_get_contents($url);
$JsonDecodeData=json_decode($data, true);
print_r($data);
?>