Facebook share count

facebook_share_count.php

<?php
function wds_post_facebook_count( $post_id ) {
  $api = "https://graph.facebook.com/";
  
  $url = $api . urlencode( get_permalink( $post_id ) );
  
  $response = wp_remote_get( $url );
  if( is_wp_error( $response ) ) {
    return 0;
  }
  if( '200' != wp_remote_retrieve_response_code( $response ) ) {
    // Bad url
    return 0;
  }
  $body = wp_remote_retrieve_body( $response );
  $body = json_decode( $body );
  if( isset( $body->shares ) ) {
    // Shares will not be set if there are none!
    return $body->shares;
  }
  return 0;
}