Facebook Login for PHP (v1)

This repository contains the open source PHP files that allows you to access the Facebook Platform from your PHP app, server to server, without Javascript.

Installation

The Facebook Login PHP can be installed with Composer. Run this command:

composer require grippo/fb-php-server-login

Usage: INI File

Create a ".config.ini" file with facebook credentials and permissions. Permissions is an array, add how much as you need.

[facebook]
app_id={{ the app id }}
app_secret={{ the app secret }}
callback_url={{ the callback url }}
permissions[]=email
permissions[]={{ other permission }}
permissions[]={{ other permission }}

Usage: login

This code executes whenever the user clicks on the Login Button.

if(!session_id()) {
    session_start();
}

require_once __DIR__ . '/../vendor/autoload.php';

use \FbServer\Login;

// Is user logged in?
if (array_key_exists('facebook_access_token', $_SESSION) && isset($_SESSION['facebook_access_token']))
{
	// user is logged in
} else {
	$config = parse_ini_file('../.config.ini', true);
	$login = new Login(
		$config['facebook']['app_id'], 
		$config['facebook']['app_secret'], 
		$config['facebook']['callback_url'], 
		$config['facebook']['permissions']
	);
	$url = $login->getLoginUrl();
	// redirect to $url to login
}

Usage: Callback

This code executes after the Facebook dialog returns to the callback url.

$config = parse_ini_file('../.config.ini', true);
$login = new Login(
	$config['facebook']['app_id'], 
	$config['facebook']['app_secret'], 
	$config['facebook']['callback_url'], 
	$config['facebook']['permissions']
);
$accessToken = $login->getToken(); 
if (isset($accessToken)) {
    $_SESSION['facebook_access_token'] = (string) $accessToken;
    echo "User logged in!"
} else {
    echo "Not logged in: ". $_COOKIE['facebook_message'] . "\n";
} 
 

Usage: Making calls to Facebook Graph API

When we have an access_token, we are able to make graph API calls.

try {
	$response = $login->fb->get(
		'/me',
		$_SESSION['facebook_access_token']
  	);
} catch(Facebook\Exceptions\FacebookResponseException $e) {
	echo $e->getMessage();
} catch(Facebook\Exceptions\FacebookSDKException $e) {
	echo $e->getMessage();
}
$retValue = $response->getGraphUser();
print_r($retValue);
 

Contributing

License

Open source.

Security Vulnerabilities

If you have found a security issue, please contact the maintainers directly at jorge@grippo.com.