Facebook API请求，即使FB usernam不存在

Question

I am requesting data from a few different Facebook Like Pages in one request. If one Pages' ID is not correct, for some reason, the request fails:

{
   "error": {
  "message": "(#803) Some of the aliases you requested do not exist:    asd121233,das3b12s",
      "type": "OAuthException",
  "code": 803
   }
}

Is there a way to request those IDs that are "correct". I could request every page (cron job) to see if the IDs are correct, but that would be unnecessary if there is a way to request data even though one ID does not exist.

Thanks in advance

Answer 1

Batch requests can help, you POST your GET queries to /?batch endpoint (as encoded JSON), the response will return as:

,

each array contains a GET query you requests you can access data using $batch[{index}]['body']['{desired_field}']

<?php

 $access_token = '{app_id}|{app_secret}'; // a valid user or an app access_token

  $queries = array(
    array('method' => 'GET', 'relative_url' => '/google?fields=about,name'),
    array('method' => 'GET', 'relative_url' => '/fiverras3t5wv4tbsdf?fields=about,name'), // this page doesn't exist for sure
    array('method' => 'GET', 'relative_url' => '/designtaxi?fields=about,name'),
    array('method' => 'GET', 'relative_url' => '/smashmag?fields=about,name'),
    array('method' => 'GET', 'relative_url' => '/XstackoverflowX?fields=about,name'), // this page doesn't exist for sure
    array('method' => 'GET', 'relative_url' => '/asd121233?fields=about,name'), // this page doesn't exist for sure
    );

  $p = array('access_token' => $access_token);

  $batch = api('/?batch='.json_encode($queries), 'POST', $p);

  foreach ($batch as $response) { // loop check each inner response

    if ($response['code'] == '200') { // if the graph has returned data

       $response = json_decode($response['body'], true);

       print '<p>About '. $response['name'].': ' . $response['about'].'</p>'.PHP_EOL;

    } else { // the pages doesn't exists (404 bad request)

       print '<p>The page doesn\'t exists'.'</p>'.PHP_EOL;

    }
  }

function api( $path, $method = NULL, $params = NULL) {

    $apiCall = 'https://graph.facebook.com/v2.0' . $path;
             // Initiate the cURL extension
             $ch = curl_init();
                       // Check if the method is GET or POST
                       if ( is_null($method) ) {

                             curl_setopt( $ch, CURLOPT_POST, false );
                             if ( is_null($params) ) {
                             // NO PARAMS
                             } else {
                             $apiCall .= '?' . http_build_query($params);
                             // echo 'NULL:'.$apiCall;
                             }

                        } else if ( $method === 'GET' ) {

                             curl_setopt( $ch, CURLOPT_POST, false );
                             if ( is_null($params) ) {
                             // NO PARAMS
                             } else {
                             $apiCall .= '?' . http_build_query($params);
                             // echo 'GET: '.$apiCall;
                             }

                       } else if ( $method === 'POST' ) {

                             curl_setopt( $ch, CURLOPT_POST, true );
                             // Check if any params are set
                             if ( is_null($params) ) {
                             // NO PARAMS
                             } else {
                             $params = http_build_query($params);
                             curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
                             }

                       }

                       curl_setopt($ch, CURLOPT_URL, $apiCall);
                       curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                       curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
                       curl_setopt($ch, CURLOPT_HEADER, 0);
                       curl_setopt($ch, CURLOPT_CONNECTTIMEOUT ,0);
                       curl_setopt($ch, CURLOPT_TIMEOUT, 500);
             // Execute cURL         
             $apiResults = curl_exec($ch);
             // Close cURL
             curl_close($ch);
             // return an JSON *ARRAY* not an object
             return json_decode($apiResults, true);

}

php-ref