How to implement facebook hashtag php search?

Question

PHP

It is required to implement a hashtag search on Facebook posts. Got to Facebook SDK v5 for PHP.
By trial, error and Google search, I came up with the following code:

$app= new Facebook\FacebookApp($config['app_id'],$config['app_secret']);
$request = new Facebook\FacebookRequest(  $app,   $accessToken,   'GET',    '/search',   array(  'q'=>'запрос'  ));
 $url='https://graph.facebook.com'.$request->getUrl();
  $ch=curl_init();
  CURL_SETOPT($ch,CURLOPT_URL,$url);
  CURL_SETOPT($ch,CURLOPT_RETURNTRANSFER, 1);
  $json=json_decode(curl_exec($ch));
  var_dump($json);

returns:

object(stdClass)#9 (1) {
  ["error"]=>
  object(stdClass)#10 (4) {
    ["message"]=>
    string(30) "An unknown error has occurred."
    ["type"]=>
    string(14) "OAuthException"
    ["code"]=>
    int(1)
    ["fbtrace_id"]=>
    string(11) "HRr/GB73ea4"
  }
}

When getting information about the user and getting a list of photos, everything works fine, but the search does not work, what should I do?

Answer 1

Something is wrong with the request. It actually returns an error: "(#11) Post search has been deprecated". Those. they removed this method. The task of searching by hashtags with the current set of Facebook API methods cannot be implemented.