Using readability parser API to fetch image url from web page - php

Question

Here I found readability which parse the data from web page and give information of interest.
But I could not understand how to use it.
https://www.readability.com/developers/api/parser
Request: GET /api/content/v1/parser?url=http://blog.readability.com/2011/02/step-up-be-heard-readability-ideas/&token=1b830931777ac7c2ac954e9f0d67df437175e66e
It gives json response.
I am working on PHP, how to make above request for particular url like http://google.com?
UPDATE1:
<?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';
//Also tried with $API_URL = 'http://blog.readability.com/2011/02/step-up-be-heard-readability-ideas'; with no luck
// build our url
$url = sprintf(API_URL, $encodedUrl, TOKEN); //Also tried with $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('http://nextbigwhat.com/');
?>
Any issue with code? gives error - >
Warning: file_get_contents(https://www.readability.com/api/content/v1/parser?url=http%3A%2F%2Fnextbigwhat.com&token=1b830931777ac7c2ac954e9f0d67df437175e66e): failed to open stream: HTTP request failed! HTTP/1.1 403 FORBIDDEN in F:\wamp\www\inviteold\test2.php on line 14

Answer 1

Perhaps something like this:
define('TOKEN', "your_token_here");
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);
// 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'];
}
The code is not tested so you might need to adjust it.