Create a RESTful Web Service in PHP

What is Restful API?

Restful API is a Representational state transfer Application Programming Interface.If we are sending html request in sever via  API sever give a information in a json or xml form. Json or xml why because those are structure data.It is using various type of HTTP Method. GET,PUT,POST,DELETE.We are also using a SOAP. SOAP is a simple object acess protocol.IT is also implementing webservices and exchanging data information.RestAPI it is most powerful and very fast.Most pouplar big company like Amazon,Goolge,Twitter,yahoo using Restful API. API also used a cloud services.

Step-1. Go to notepad++ or sublime then create a function.php page and save a page XAMPP or WampServer . htdoc folder in XAMPP or www folder in WAMP on localhost.

<?php

function get_price($find)
{
$softwarequery=array(
         "website"=>299,
          "blogger"=>348,
           "page "=>267
);
foreach($softwarequery as $Query=>$price)
{
   if($Query==$find)
    {
    return $price;
     break;
}
}
}
Step-2. Create a index.php page and save a page XAMPP or WAMP sever htdoc folder in XAMPP or www folder in WAMP on localhost.

<?php
header("content-Type:application/json");
include("function.php");
if(!empty($_GET['name']))
{
$name= $_GET['name'];
$price= get_price($name);

if (empty($price))

 deliver_response(200,"blogger  found",$price);

else

deliver_response(200,"website found",$price);

}
else
{
deliver_response(400,"page not found",Null);

}

function deliver_response($status,$status_message,$data)
{
header("HTTP/1.1 $status $status_message");
$response['status']=$status;
$response['status_message']=$status_message;
$response['data']=$data;
$json_response=json_encode($response);
echo $json_response;


}
?>
OUTPUT-