Facebook SDK v4 for PHP Minimal Example

Question

I\'m trying to get the minimal example

using Facebook\\FacebookSession;

FacebookSession::setDefaultApplication(\'YOUR_APP_ID\',\'YOUR_APP_SECRET\');

// Use         


        

Answer 1

1. PHP Version 5.4.0 or higher is required.
2. Facebook uses Implementations of PSR-4. Hence You dont have to use require or require_once or include or include_once.
3. In PSR-4, you just need packagename(namespace) i.e. directory name and class file name only.It will register classes dynamically from given package name.Ex.:- use packaname\classname.
4. You will find the file autoload.php in Facebook SDK Autoload root directory.
5. use is used to load dynamic classes using spl_autoload_register
6. Facebook register all library using autoload.php or autoload_fb.php
7. You have to find autoload.php in your downloaded library like facebook-php-sdk-v4-4.0-dev/.
8. If you just wants to use Facebook library from download source.Then you have to copy autoload.php in your root directory or in Facebook directory.
9. defined constant for FACEBOOK_SDK_V4_SRC_DIR i.e. path of the facebook library
10. You need to do as below to use in php

Note: I have copied /var/www/stack/24006673/facebook-php-sdk-v4-4.0-dev/src/Facebook directory and /var/www/stack/24006673/facebook-php-sdk-v4-4.0-dev/autoload.php file in root directory /var/www/stack/24006673/

define('FACEBOOK_SDK_V4_SRC_DIR','/var/www/stack/24006673/Facebook/');
require_once("autoload.php");
use Facebook\FacebookSession;
use Facebook\FacebookRequest;
use Facebook\GraphUser;
use Facebook\FacebookRequestException;
use Facebook\FacebookRedirectLoginHelper;
FacebookSession::setDefaultApplication('YOUR_APP_ID','YOUR_APP_SECRET');