REST WebService PHP (basic)

Website:
1. Response will be in HTML
2. Accessed by Humans via web browsers

WebService:
1. Accessed by Programs
2. Response will be in XML or JSON.
3. User to Communicate between heterogeneous Systems and Platforms

example :
getting response = http://localhost/index.php?id=x

<?php
	header("Content-Type:application/json");
	
	function get($find){
			$students = array(
							1 => "male",
							2 => "female",
							3 => "shemale"
							);
			foreach ($students as $student=>$name) {
				if ($student == $find) {
					return $name;
					break;
				}
			}
	}
	
	if (!empty($_GET['id'])) {
		$id = $_GET['id'];
		$name = get($id);
		
		if (empty($name)) {
			response(100, "Not Found", NULL);
		}
		else {
			response(200, "Student Found", $name);
		}
	} 
	else {
		response(300, "Invalid Request", NULL);
	}
	
	function response($status, $student, $gender) {
		header("HTTP/1.1 $gender $student");
			$res['gender'] = $gender;
			$res['student'] = $student;
			$res['status'] = $status;
			
			$json = json_encode($res);
			echo $json;			
	}
?>

<?php

header("Content-Type:application/json");

function get($find){

$students = array(

1 => "male",

2 => "female",

3 => "shemale"

);

foreach ($students as $student=>$name) {

if ($student == $find) {

return $name;

break;

}

if (!empty($_GET['id'])) {

$id = $_GET['id'];

$name = get($id);

if (empty($name)) {

response(100, "Not Found", NULL);

}

else {

response(200, "Student Found", $name);

}

else {

response(300, "Invalid Request", NULL);

}

function response($status, $student, $gender) {

header("HTTP/1.1 $gender $student");

$res['gender'] = $gender;

$res['student'] = $student;

$res['status'] = $status;

$json = json_encode($res);

echo $json;

}

change URL to get response jSON
create .htaccess

Options +FollowSymlinks
RewriteEngine on
RewriteRule ^([a-zA-Z_-]*)$  index.php?id=$1 [nc,qsa]

Options +FollowSymlinks

RewriteEngine on

RewriteRule ^([a-zA-Z_-]*)$ index.php?id=$1 [nc,qsa]

http://localhost/index.php?id=x
modified
http://localhost/x