PHP SDK Version 4.0.0

get-profile-facebook.php

use Facebook\FacebookRequest;
use Facebook\GraphUser;
use Facebook\FacebookRequestException;

if($session) {

  try {

    $user_profile = (new FacebookRequest(
      $session, 'GET', '/me'
    ))->execute()->getGraphObject(GraphUser::className());

    echo "Name: " . $user_profile->getName();

  } catch(FacebookRequestException $e) {

    echo "Exception occured, code: " . $e->getCode();
    echo " with message: " . $e->getMessage();

  }   

}

post-image-facebook.php

use Facebook\FacebookRequest;
use Facebook\GraphObject;
use Facebook\FacebookRequestException;

if($session) {

  try {

    // Upload to a user's profile. The photo will be in the
    // first album in the profile. You can also upload to
    // a specific album by using /ALBUM_ID as the path     
    $response = (new FacebookRequest(
      $session, 'POST', '/me/photos', array(
        'source' => new CURLFile('path/to/file.name', 'image/png'),
        'message' => 'User provided message'
      )
    ))->execute()->getGraphObject();

    // If you're not using PHP 5.5 or later, change the file reference to:
    // 'source' => @'/path/to/file.name'

    echo "Posted with id: " . $response->getProperty('id');

  } catch(FacebookRequestException $e) {

    echo "Exception occured, code: " . $e->getCode();
    echo " with message: " . $e->getMessage();

  }   

}

Note that the 'message' field must come from the user, as pre-filled content is forbidden by the [Platform Policies](https://developers.intern.facebook.com/policy/#integration).

post-link-facebook.php

use Facebook\FacebookRequest;
use Facebook\GraphObject;
use Facebook\FacebookRequestException;

if($session) {

  try {

    $response = (new FacebookRequest(
      $session, 'POST', '/me/feed', array(
        'link' => 'www.example.com',
        'message' => 'User provided message'
      )
    ))->execute()->getGraphObject();

    echo "Posted with id: " . $response->getProperty('id');

  } catch(FacebookRequestException $e) {

    echo "Exception occured, code: " . $e->getCode();
    echo " with message: " . $e->getMessage();

  }   

}