1. Building
RESTful Web Service
With PHP
Huy Nguyen - huy@byhuy.com

2. 
REST and RESTful web service

Building a RESTful framework with PHP

3. REpresentational State Transfer

An architecture not a protocol or a standard

Resource Oriented Approach

World Wide Web is the key example

4. What is a RESTful web service?
A web site for Machines!!!

5. MIME types
GET POST
PUT DELETE HEAD supported
OPTIONS
Resources
URIs
It's all about HTTP, dude!

6. REST vs RPC
ROA vs SOA
RESOURCES vs FUNCTIONS

7. Flickr has a RESTful web service
But it's crap!!!!!!!

8. This is RESTful:
http://feeds.feedburner.com/Geshansblog
and this is not:
http://api.flickr.com/services/rest/?method=flickr.test.echo&name=value

9. RESTful Web Protocols

Syndication protocols (RSS, Atom Feed)

Atom Publishing Protocol

RDF and OWL

OpenID Single Sign-on Standard

Google's OpenSocial Protocol

Amazon's S3 Protocol

...

10. Now let's talk about PHP
... and how it supports REST

11. $_SERVER
Accept => $_SERVER['HTTP_ACCEPT']
Request Method => $_SERVER['REQUEST_METHOD']

12. $_POST and $_GET
Everyone knows them!

13. RAW POST/PUT REQUEST
DATA?
<?php
// get RAW HTTP POST
$rawData = file_get_contents('php://input');
// but this won't work with enctype="multipart/form-data" :(

14. Why is symfony not RESTful?
because RESTful web service is about
resources, not functions/actions

15. My RESTful Framework

Creating Resources

Creating URIs

Handling HTTP methods

MIME-type support

16. Resources As Controllers
A resources is a class that handles HTTP methods

17. /**
* HTTP GET handler
*/
public function __handleGet()
{
// Not implemented
$this->_response->setResponseCode(501);
}
/**
* HTTP POST handler
*/
public function __handlePost()
{
// Not implemented
$this->_response->setResponseCode(501);
}
/**
* HTTP PUT handler
*/
public function __handlePut()
{
// Not implemented
$this->_response->setResponseCode(501);
}

18. /**
* HTTP DELETE handler
*/
public function __handleDelete()
{
// Not implemented
$this->_response->setResponseCode(501);
}
/**
* HTTP HEAD handler
*/
public function __handleHead()
{
// Not implemented
$this->_response->setResponseCode(501);
}

19. Creating The URIs
/blog/([a-zA-Z0-9]+)/? => blogResource

20. Composite Resources
Konstrukt Framework
(konstrukt.dk)

22. MIME Types & Multiple Views
$_SERVER['HTTP_ACCEPT']
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

23. My framework is called Kao

24. Thank you! I love PHP!

25. Any Question?