How to generate FB page access token

 GET /me/accounts HTTP/1.1
Host: graph.facebook.com
 

 $request = new FacebookRequest(
  $session,
  'GET',
  '/me/accounts'
);
$response = $request->execute();
$graphObject = $response->getGraphObject();
 

 FB.api(
    "/me/accounts",
    function (response) {
      if (response && !response.error) {
        /* handle the result */
      }
    }
);
 

 new GraphRequest(
    AccessToken.getCurrentAccessToken(),
    "/me/accounts",
    null,
    HttpMethod.GET,
    new GraphRequest.Callback() {
        public void onCompleted(GraphResponse response) {
            /* handle the result */
        }
    }
).executeAsync();
 

FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]
                               initWithGraphPath:@"/me/accounts"
                                      parameters:params
                                      HTTPMethod:@"GET"];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection,
                                      id result,
                                      NSError *error) {
    // Handle the result
}];