File_get_content failed to open the stream - php

Question

I have checked previous related threads, but my problem deals with specific readability API.
I am trying to get most relavant image from web page. I am using redhttps://www.readability.com/developers/api/parser for that.
Here is my code:
<?php
define('TOKEN', "1b830931777ac7c2ac954e9f0d67df437175e66e");
define('API_URL', "https://www.readability.com/api/content/v1/parser?url=%s&token=%s");
function get_image($url) {
// sanitize it so we don't break our api url
$encodedUrl = urlencode($url);
$TOKEN = '1b830931777ac7c2ac954e9f0d67df437175e66e';
$API_URL = 'https://www.readability.com/api/content/v1/parser?url=%s&token=%s';
// $API_URL = 'http://blog.readability.com/2011/02/step-up-be-heard-readability-ideas';
// build our url
$url = sprintf($API_URL, $encodedUrl, $TOKEN);
// call the api
$response = file_get_contents($url);
if( $response ) {
return false;
}
$json = json_decode($response);
if(!isset($json['lead_image_url'])) {
return false;
}
return $json['lead_image_url'];
}
echo get_image('https://www.facebook.com/');
?>
Error:
Warning: file_get_contents(https://www.readability.com/api/content/v1/parser?url=https%3A%2F%2Fwww.facebook.com%2F&token=1b830931777ac7c2ac954e9f0d67df437175e66e): failed to open stream: HTTP request failed! HTTP/1.1 403 FORBIDDEN in F:\wamp\www\inviteold\test2.php on line 16

Answer 1

You seem to be getting content from Facebook.
Due to your error 403 FORBIDDEN, I would say that your parser/code is not authorised to access the facebook page you are accessing and thus you are getting denied due to privacy settings.