Botão like para foto em página do facebook

Código:
<?php

    //include "dbc.php";

    require './src/facebook.php';

        $url = (!empty($_SERVER['HTTPS'])) ? 'https://'.$_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'].$_SERVER['REQUEST_URL'] : 'http://'.$_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'].$_SERVER['REQUEST_URL'];

        $facebook = new Facebook(array(

          'appId'  => '******',

          'secret' => '******',

          'cookie' => true, // enable optional cookie support

        ));

        $user = $facebook->getUser();

        if ($user) {

          try {

            // Proceed knowing you have a logged in user who's authenticated.

            $user_profile = $facebook->api('/me');



           //$pageInfo = $facebook->api('/'.$pageid.'?access_token='.$_SESSION['fb_112104298812138_access_token].');

                //$pageInfoUser = $user_profile[id];

          } catch (FacebookApiException $e) {

            error_log($e);

            $user = null;

          }

        }

        /*  */

        if ($user) {

          $logoutUrl = $facebook->getLogoutUrl();

        } else {

        $params = array(

          scope => 'read_stream,publish_stream,publish_actions,offline_access',

          redirect_uri => $url

        );

          $loginUrl = $facebook->getLoginUrl($params);

        }

        $access_token = $facebook->getAccessToken();

// $access_token = $_SESSION['user_id'];

//$_SESSION['fb_135669679827333_access_token'];





            if(!$user){

        echo ' : <a href="'.$loginUrl.'" target="_self">Login</a>  ';

        }else{

            echo '<a href="'.$logoutUrl.'?'.$app_access_token.'" target="_blank">Logout</a>';

            }

    ?>

    <?



    function GetCH(){

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "https://graph.facebook.com/oauth/access_token?client_id=112115512230132&client_secret=ef3d2a30aa9a3f799130565b8391d42dT&grant_type=client_credentials");

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);

    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT_MS,20000);

    if(substr($url,0,8)=='https://'){

        // The following ensures SSL always works. A little detail:

        // SSL does two things at once:

        //  1. it encrypts communication

        //  2. it ensures the target party is who it claims to be.

        // In short, if the following code is allowed, CURL won't check if the 

        // certificate is known and valid, however, it still encrypts communication.

        curl_setopt($ch,CURLOPT_HTTPAUTH,CURLAUTH_ANY);

        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);

    }

    $sendCH = curl_exec($ch);

    curl_close($ch);

    return $sendCH;

    };

    echo "Access_token : ".$access_token;

    $app_access_token = GetCH();   



      if($_GET['postid']){

      $postid = $_GET['postid'];

      echo "test1";

      }else{

      $postid = "ERROR";//'135669679827333_151602784936066';

      }



        if($access_token){

            echo "test2";

     $pageLike = $facebook->api('/'.$postid.'/likes?access_token='.$access_token.'&method=post', 'POST');

    }

    ?>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml">

    <head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

    <title>Untitled Document</title>





    </head>



    <body>





    </body>

    </html>