{"id":434,"date":"2019-04-05T13:11:09","date_gmt":"2019-04-05T07:41:09","guid":{"rendered":"https:\/\/webdesignerinc.com\/blog\/?p=434"},"modified":"2019-04-05T13:35:23","modified_gmt":"2019-04-05T08:05:23","slug":"using-facebook-php-sdk-3-with-codeigniter","status":"publish","type":"post","link":"https:\/\/webdesignerinc.com\/blog\/using-facebook-php-sdk-3-with-codeigniter\/","title":{"rendered":"Using Facebook PHP SDK 3 with CodeIgniter"},"content":{"rendered":"

Facebook App<\/h2>\n
    \n
  1. Create a new Facebook App<\/a>.<\/li>\n
  2. Get the APP ID and APP Secret.<\/li>\n
  3. After creating your App, click\u00a0Settings<\/strong>.<\/li>\n
  4. In the Basic section, add your domain name in the App Domains.<\/li>\n
  5. Click on\u00a0Add Platform<\/strong>\u00a0and select\u00a0Website<\/strong>\u00a0and add the same domain you added in step 4 but with\u00a0http:\/\/<\/strong>\u00a0as prefix in\u00a0Site URL<\/strong>.<\/li>\n
  6. To test the app\u00a0localhost<\/strong>, you need to create a\u00a0Virtual Host<\/strong>.<\/li>\n<\/ol>\n

    Installing<\/h2>\n
      \n
    1. Download the\u00a0Facebook PHP SDK<\/a>.<\/li>\n
    2. Download\u00a0CodeIgniter<\/a>.<\/li>\n
    3. Extract CodeIgniter.<\/li>\n
    4. Extract the Facebook SDK and\n
        \n
      1. Rename facebook.php to Facebook.php<\/li>\n
      2. Add the following at the beginning of the Facebook.php file, right after the php opening tag.\n
        \n
        \n
        <\/div>\n\n\n\n
        \n
        1<\/div>\n<\/td>\n
        		\n
        \n
        if ( ! defined('BASEPATH')) exit('No direct script access allowed');<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/li>\n
      3. Create a directory named\u00a0\u201cfacebook\u201d<\/em>\u00a0in\u00a0application\/libraries<\/em>\u00a0and copy the 3 files in the Facebook SDK extracted directory to\u00a0application\/libraries\/facebook\u00a0<\/em>in CodeIgniter.<\/li>\n<\/ol>\n<\/li>\n
      4. In CodeIgniter, create a file facebook.php in\u00a0application\/config<\/em>\u00a0directory with the following content (add your application Id and secret key of the Facebook app):\n
        \n
        \n
        <\/div>\n\n\n\n
        \n
        1<\/div>\n
        2<\/div>\n
        3<\/div>\n
        4<\/div>\n
        5<\/div>\n
        6<\/div>\n
        7<\/div>\n<\/td>\n
        		\n
        \n
        <?php\u00a0 if ( ! defined('BASEPATH')) exit('No direct script access allowed');<\/code><\/div>\n

        \n$config['appId'] = [App ID];
        \n$config['secret'] = [App secret];<\/code><\/div>\n
        <\/div>\n
        \/* End of file facebook.php *\/
        \n\/* Location: .\/application\/config\/facebook.php *\/
        \n<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/li>\n
      5. Open your\u00a0application\/config\/config.php<\/em>\u00a0file and make sure\u00a0$config[‘allow_get_array’]<\/strong>\u00a0is set to\u00a0true<\/strong>.<\/li>\n<\/ol>\n

        How this example will work with OAuth<\/h2>\n

        In OAuth, the procedure is the following:<\/p>\n

          \n
        1. The user clicks on a sign in link on your website.<\/li>\n
        2. User is redirected to Facebook, enter his credentials, authorize your app.<\/li>\n
        3. Facebook then redirects the user back to your application with data.<\/li>\n<\/ol>\n

          Creating controller and view files<\/h2>\n

          1. Create a controller (in this example Auth Controller). In your controller add the following code:<\/p>\n

          \n
          \n\n\n\n
          \n
          1<\/div>\n
          2<\/div>\n
          3<\/div>\n
          4<\/div>\n
          5<\/div>\n
          6<\/div>\n
          7<\/div>\n
          8<\/div>\n
          9<\/div>\n
          10<\/div>\n
          11<\/div>\n
          12<\/div>\n
          13<\/div>\n
          14<\/div>\n
          15<\/div>\n
          16<\/div>\n
          17<\/div>\n
          18<\/div>\n
          19<\/div>\n
          20<\/div>\n
          21<\/div>\n
          22<\/div>\n
          23<\/div>\n
          24<\/div>\n
          25<\/div>\n
          26<\/div>\n
          27<\/div>\n
          28<\/div>\n<\/td>\n
          		\n
          <?php\u00a0 if ( ! defined('BASEPATH')) exit('No direct script access allowed');<\/code><\/div>\n
          class Auth extends CI_Controller {
          \npublic function facebook()
          \n{
          \nparse_str( $_SERVER['QUERY_STRING'], $_REQUEST );
          \n$CI = & get_instance();
          \n$CI->config->load(\"facebook\", TRUE);
          \n$config = $CI->config->item('facebook');
          \n$this->load->library('facebook\/Facebook', $config);<\/code>$userId = $this->facebook->getUser();\/\/ If user is not yet authenticated, the id will be zero
          \nif($userId == 0){
          \n\/\/ Generate a login url
          \n$data[‘login_url’] = $this->facebook->getLoginUrl(array(\u2018scope\u2019=>\u2019email,user_about_me\u2019));
          \n$this->load->view(\u2018main_index\u2019, $data);
          \n} else {
          \n\/\/ Get user\u2019s data and print it
          \n$user = $this->facebook->api(\u2018\/me\u2019);
          \necho \u2018<pre>\u2019;
          \nprint_r($user);
          \n}<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          2. Create a view, called main_index.php in your views directory.<\/p>\n

          \n
          \n\n\n\n
          \n
          1<\/div>\n<\/td>\n
          		\n
          \n
          <\/code><a href=\"<?php echo $login_url; ?>\">Click here to login using Facebook<\/a><\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          3. Now load the function\u00a0facebook<\/strong>\u00a0of\u00a0Auth Controller<\/strong>\u00a0in your browser.<\/p>\n

          If the user authenticates your app, you will get the user\u2019s data.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Facebook App Create a new Facebook App. Get the APP ID and APP Secret. After creating your App, click\u00a0Settings. In the Basic section, add your domain name in the App… Read more »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[26,25],"class_list":["post-434","post","type-post","status-publish","format-standard","hentry","category-tutorial","tag-codeigniter","tag-php"],"yoast_head":"\nUsing Facebook PHP SDK 3 with CodeIgniter - Web designer Blog | web designer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/webdesignerinc.com\/blog\/using-facebook-php-sdk-3-with-codeigniter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Using Facebook PHP SDK 3 with CodeIgniter - Web designer Blog | web designer\" \/>\n<meta property=\"og:description\" content=\"Facebook App Create a new Facebook App. Get the APP ID and APP Secret. 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