Создаем RESTful веб-службу на PHP

PHP

<?php
/* 
Класс домена, используемого для демонстрации RESTful веб-служб
*/
Class Mobile {	
	private $mobiles = array(
		1 => 'Apple iPhone 6S',  
		2 => 'Samsung Galaxy S6',  
		3 => 'Apple iPhone 6S Plus',  			
		4 => 'LG G4',  			
		5 => 'Samsung Galaxy S6 edge',  
		6 => 'OnePlus 2');
		
	/*
	здесь вы должны подключить Data Access Object (DAO) 
	*/
	public function getAllMobile(){
		return $this->mobiles;
	}	
	public function getMobile($id){		
		$mobile = array($id => ($this->mobiles[$id]) ? $this->mobiles[$id] : $this->mobiles[1]);
		return $mobile;
	}	
}
?>

.htaccess

	# активируем преобразование URL
	Options +FollowSymlinks
	RewriteEngine on

	# прописываем соответствие URL и файла, который будет его обрабатывать
	RewriteRule ^mobile/list/$   RestController.php?view=all [nc,qsa]
	RewriteRule ^mobile/list/([0-9]+)/$   RestController.php?view=single&id=$1 [nc,qsa]

PHP

	<?php
	require_once("MobileRestHandler.php");
			
	$view = "";
	if(isset($_GET["view"]))
		$view = $_GET["view"];
	/*
	соответствие URL и методов RESTful веб-службы
	*/
	switch($view){

		case "all":
			// обрабатывает REST Url /mobile/list/
			$mobileRestHandler = new MobileRestHandler();
			$mobileRestHandler->getAllMobiles();
			break;
			
		case "single":
			// обрабатывает REST Url /mobile/show/<id>/
			$mobileRestHandler = new MobileRestHandler();
			$mobileRestHandler->getMobile($_GET["id"]);
			break;

		case "" :
			//404 – не найден;
			break;
	}
	?>

PHP

	<?php 
	/*
	Простой базовый класс веб-сервисов RESTful
	Используйте его как шаблон 
	*/
	class SimpleRest {
		
		private $httpVersion = "HTTP/1.1";

		public function setHttpHeaders($contentType, $statusCode){
			
			$statusMessage = $this -> getHttpStatusMessage($statusCode);
			
			header($this->httpVersion. " ". $statusCode ." ". $statusMessage);		
			header("Content-Type:". $contentType);
		}
		
		public function getHttpStatusMessage($statusCode){
			$httpStatus = array(
				100 => 'Continue',  
				101 => 'Switching Protocols',  
				200 => 'OK',
				201 => 'Created',  
				202 => 'Accepted',  
				203 => 'Non-Authoritative Information',  
				204 => 'No Content',  
				205 => 'Reset Content',  
				206 => 'Partial Content',  
				300 => 'Multiple Choices',  
				301 => 'Moved Permanently',  
				302 => 'Found',  
				303 => 'See Other',  
				304 => 'Not Modified',  
				305 => 'Use Proxy',  
				306 => '(Unused)',  
				307 => 'Temporary Redirect',  
				400 => 'Bad Request',  
				401 => 'Unauthorized',  
				402 => 'Payment Required',  
				403 => 'Forbidden',  
				404 => 'Not Found',  
				405 => 'Method Not Allowed',  
				406 => 'Not Acceptable',  
				407 => 'Proxy Authentication Required',  
				408 => 'Request Timeout',  
				409 => 'Conflict',  
				410 => 'Gone',  
				411 => 'Length Required',  
				412 => 'Precondition Failed',  
				413 => 'Request Entity Too Large',  
				414 => 'Request-URI Too Long',  
				415 => 'Unsupported Media Type',  
				416 => 'Requested Range Not Satisfiable',  
				417 => 'Expectation Failed',  
				500 => 'Internal Server Error',  
				501 => 'Not Implemented',  
				502 => 'Bad Gateway',  
				503 => 'Service Unavailable',  
				504 => 'Gateway Timeout',  
				505 => 'HTTP Version Not Supported');
			return ($httpStatus[$statusCode]) ? $httpStatus[$statusCode] : $status[500];
		}
	}
	?>

PHP

<?php
require_once("SimpleRest.php");
require_once("Mobile.php");
		
class MobileRestHandler extends SimpleRest {

	function getAllMobiles() {	

		$mobile = new Mobile();
		$rawData = $mobile->getAllMobile();

		if(empty($rawData)) {
			$statusCode = 404;
			$rawData = array('error' => 'No mobiles found!');		
		} else {
			$statusCode = 200;
		}

		$requestContentType = $_SERVER['HTTP_ACCEPT'];
		$this ->setHttpHeaders($requestContentType, $statusCode);
				
		if(strpos($requestContentType,'application/json') !== false){
			$response = $this->encodeJson($rawData);
			echo $response;
		} else if(strpos($requestContentType,'text/html') !== false){
			$response = $this->encodeHtml($rawData);
			echo $response;
		} else if(strpos($requestContentType,'application/xml') !== false){
			$response = $this->encodeXml($rawData);
			echo $response;
		}
	}
	
	public function encodeHtml($responseData) {
	
		$htmlResponse = "<table border='1'>";
		foreach($responseData as $key=>$value) {
    			$htmlResponse .= "<tr><td>". $key. "</td><td>". $value. "</td></tr>";
		}
		$htmlResponse .= "</table>";
		return $htmlResponse;		
	}
	
	public function encodeJson($responseData) {
		$jsonResponse = json_encode($responseData);
		return $jsonResponse;		
	}
	
	public function encodeXml($responseData) {
		// creating object of SimpleXMLElement
		$xml = new SimpleXMLElement('<?xml version="1.0"?><mobile></mobile>');
		foreach($responseData as $key=>$value) {
			$xml->addChild($key, $value);
		}
		return $xml->asXML();
	}
	
	public function getMobile($id) {

		$mobile = new Mobile();
		$rawData = $mobile->getMobile($id);

		if(empty($rawData)) {
			$statusCode = 404;
			$rawData = array('error' => 'No mobiles found!');		
		} else {
			$statusCode = 200;
		}

		$requestContentType = $_SERVER['HTTP_ACCEPT'];
		$this ->setHttpHeaders($requestContentType, $statusCode);
				
		if(strpos($requestContentType,'application/json') !== false){
			$response = $this->encodeJson($rawData);
			echo $response;
		} else if(strpos($requestContentType,'text/html') !== false){
			$response = $this->encodeHtml($rawData);
			echo $response;
		} else if(strpos($requestContentType,'application/xml') !== false){
			$response = $this->encodeXml($rawData);
			echo $response;
		}
	}
}
?>