html - PHP Facebook request permissions publish -


when log in on facebook requires me permits. here code use log in , requires permits:

<?php session_start(); // added in v4.0.0 require_once 'autoload.php'; require 'functions.php'; use facebook\facebooksession; use facebook\facebookredirectloginhelper; use facebook\facebookrequest; use facebook\facebookresponse; use facebook\facebooksdkexception; use facebook\facebookrequestexception; use facebook\facebookauthorizationexception; use facebook\graphobject; use facebook\entities\accesstoken; use facebook\httpclients\facebookcurlhttpclient; use facebook\httpclients\facebookhttpable; // init app app id , secret facebooksession::setdefaultapplication( '*************','*************************' ); $required_scope     = 'public_profile, publish_actions, email, manage_pages'; //permissions required // login helper redirect_uri     $helper = new facebookredirectloginhelper('http://www.bestparty.altervista.org/app/facebook/fbconfig.php' ); try {   $session = $helper->getsessionfromredirect();  } catch( facebookrequestexception $ex ) {   // when facebook returns error } catch( exception $ex ) {   // when validation fails or other local issues } // see if have session if ( isset( $session ) ) {   // graph api request user data   $request = new facebookrequest( $session, 'get', '/me?$fields=access_token' );   $response = $request->execute();   // response   $graphobject = $response->getgraphobject();         $fbid = $graphobject->getproperty('id');              // facebook id         $fbfullname = $graphobject->getproperty('name'); // facebook full name         $femail = $graphobject->getproperty('email');         /* ---- session variables -----*/         $_session['fbid'] = $fbid;                    $_session['fullname'] = $fbfullname;         $_session['email'] =  $femail;          checkuser($fbid,$fbfullname,$femail);     /* ---- header location after session ----*/           $cookie_name = 'fbid';         $cookie_value = $fbid;         setcookie($cookie_name, $cookie_value, time() + (86400 * 30), '/');          $cookie_name2 = 'fullname';         $cookie_value2 = $fbfullname;         setcookie($cookie_name2, $cookie_value2, time() + (86400 * 30), '/');     header("location: ../gestaccount.php"); } else {    $cookie_name = 'fbid';         $cookie_value = $fbid;         setcookie($cookie_name, $cookie_value, time() + (86400 * 30), '/');    $loginurl = $helper->getloginurl( array( 'scope' => $required_scope ) );    header("location: ".$loginurl); } ?>

when try publish post, doesn't work. , gives me error:

fatal error: call member function api() on non-object in /membri/bestparty/app/try.php on line 11

this code use publish post:

<?php  require_once 'facebook/autoload.php';  $params = array(             'message'       =>  "your message",             'name'          =>  "hello world",             'description'   =>  "hello world",             'link'          =>  "hello world",             'picture'       =>  "hello world",         );          $post = $facebook->api("/$user/feed","post",$params);          echo "lalalal";  ?>


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