How can a Facebook App be utilized to retrieve the number of likes for a specific page in PHP?

To retrieve the number of likes for a specific Facebook page using a Facebook App in PHP, you will need to make use of the Facebook Graph API. You will need to obtain an access token for your Facebook App and then make a GET request to the Graph API endpoint for the specific page to retrieve the number of likes. 

<?php
// Replace 'PAGE_ID' with the ID of the specific Facebook page
$page_id = 'PAGE_ID';

// Replace 'ACCESS_TOKEN' with the access token for your Facebook App
$access_token = 'ACCESS_TOKEN';

// Make a GET request to the Graph API endpoint to retrieve the number of likes for the page
$response = file_get_contents("https://graph.facebook.com/v12.0/{$page_id}?fields=engagement&access_token={$access_token}");
$data = json_decode($response, true);

// Retrieve the number of likes from the response
$likes = $data['engagement']['count'];

// Output the number of likes
echo "Number of likes for the page: " . $likes;
?>

Keywords

Facebook API PHP SDK page likes access token Graph API

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