Introduction to web services and how to in php

Introduction to Web Services and HOW-TO in php

AGENDA

Web services introduction

Web Service Architecture

Consuming web services

How-to with PHP

Summary

What is Web Service ?

A WEB SERVICE is a distributed unit of business logic that can be accessed over the internet standard web protocols, such as HTTP, and that uses XML for sending and receiving messages.

A Web service is a software system designed to support interoperable machine-to-machine interaction over a network.(w3c).

Technically, its is a way to link loosely coupled systems using technology that doesn’t bind them to a particular programming language, component model, or platform.

Why Web Services ?

Allows businesses to use the internet to publish , discover, and aggregate services.

Solve interoperability in a platform-neutral way.

Provides a solution to bypass firewalls, thus allowing client to access a remote service.

Web Service VS Web Pages Network Transport Messaging Description Discovery UDDI, WSIL, ebXML WSDL, RDF, ebXML SOAP, XML-RPC(XML)‏ HTTP, SMTP, FTP TCP/IP, UDP LAYERS PROTOCOL/STANDARD

Consuming Web Services Service Listener Service Interface Service Implementation Network Calls SOAP Response Execution Return Values/Result Php code SOAP implementation & WSDL Description Apache HTTP server SOAP request via HTTP POST

Consuming Web Services Way: SOAP: Simple Object Access Protocol XML-PRC: XML Remote Procedure Call REST : Representational State Transfer