Web Services

We are in the modern era of technologies and on the verge of new evolutions on mobile and internet world. Every day technologies are stepping towards achievements of fantcies and taking the world to our fingertips.

PDA’s are now been widely used across the world. We are now wel comfortable with the usage of Smartphone’s for internet browsing, mail access etc.

Smartphone’s are now with well equipped configurations but there are still some limitations on processor speeds, web access speeds etc.

Drupal web services could be the ray of light allowing PDA users to have access to the websites, databases etc on their devices.

Web services get synchronized with the web servers, fetch the required data and show it to the users.

Web Services example  for iphone

Iphone access information using php web services. first Create php file to send information to iphone.

Send information in array using json_ encode.

 $host = "";
 $db = "database_name "; // database name
 $uid = "user_name"; // database user name
 $pwd = " pass_word"; // database password

 $link = mysql_connect($host, $uid, $pwd);  // connect database using mysql connect function
 mysql_select_db($db) or die("Could not select database"); 

   $arr = array();
   $name= $_REQUEST['name']; // get request from iphone

// get information from database and store values and object in array

$rs = mysql_query("select name,password from users where name=%d ",$name);


   while($obj = mysql_fetch_object($rs))
   {
      $arr[] = $obj; // store object in array
   }

   // following line is very important to send information to Iphone   

// iphone access information using user_info

   echo ('{"user_info":'.json_encode($arr).'}');

?>

Output is

{"user_info": {"name": "sam", "password": "sam!1"}}

Drupal Web services

http://drupal.org/project/services/

Services comes with XMLRPC server, other servers such as JSON, REST, SOAP, and AMF can be

Downloaded from the above link.  Service API allows modules to create other services.

Following Services are provided

1)      Comment

2)      File

3)      Menu

4)      Node

5)      Search

6)      User

7)      Views

8)      Taxonomy

Setup your Key Authentication & method access for domain

Path is admin/build/services/keys/add

For Example

 if access node content then use following method’s

Nid is required for all node method to get information  and return array of node

1)      Node.get

2)      Node.view

3)      Node.save

4)      Node.delete