GPS tracking through Google Map

Google maps provides lot of features like current position, previous track history, exact route of places etc. All this features can be implement our application by free of paid Google service as per the terms and services. The company ioss developing an application for tracking vehicles or any item by the use of Google Maps API. A gadget is connecting to the vehicle, it will send the data to the server every 2 or 30 seconds. The server captures data and insert into database and the software shows vehicle details.

How add Data Base Values in selection box(drop-down list ) on Webform Drupal ?

While I implementing MLM (Multi-Level Marketing) Software in drupal, I am forced to do a registration form,  that contains Country Selection Box. Whole Countries are stored in a database and we have to load these values to the selection box. The forms in drupal are created using Webform module. I personally like the webfrom module, because we can create/edit any form within seconds by using the GUI. 

 At first I create a Webform component of type select options. In the configuration section, you can see a drop-down list "Load a pre-built option list:", 

that is the value is loading through code. I will explain in detail, for loading the values from Database we have to implement a hook hook_webform_select_options_info() in any of modules (Here I am assuming that you know hoe to create modules in drupal, if not please refer Drupal documentation). 

Refer below code to complete module details:

function country_webform_select_options_info() {
  $items = array();
  $items['countries'] = array(
    'title' => t('Countries'),
    'options callback' => 'as_webform_options_countries',
  );

  return $items;
}

/**
 * Webform options info callback. Just give some countries as example
 */
function as_webform_options_countries() {
  $countries = array(
    t('Europe') => array (
      'nl' =>  t('The Netherlands'),
      'be' =>  t('Belgium'),
      'fr' =>  t('France'),
    ),
    t('Africa') => array (
      'tu'  =>  t('Tunisia'),
      'sa'  =>  t('South Africe'),
    ),
    t('Asia') => array (
      'ru'  =>  t('Russia'),
      'cn'  =>  t('China'),
    ),
    'key' => t('some country that is in no group'),
  ); 

/**

 *  This is Actual database values

 */
 $countries = array();
 $sql = "SELECT *
   FROM infinie_mlm_country";
  
 $result = db_query($sql);
 while ($row = db_fetch_object($result)) {
 $countries[$row->id] = $row->country_name;
 }
  
  return $countries;
}

After enabling this module, you can see the title in  "Load a pre-built option list:". Select these values to appropriate Webform components will leads to display whatever we coded.

Authorize.net Payment gateway Integration

I am first hear the word Aothorize.net is when one of my client asking to integrate International payment gateway system to his website. then i googled about this payment gateway system and its method of API integration. I foun dthe following method of API integration

1. SIM
2. AIM