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Web Services with PHP: Saying Dot Not to .NET von Luke Welling RMIT University Luke Welling and Laura Thomson are authors of the bestselling book, 'PHP and MySQL Web Development' (Sams 2001) and the upcoming 'PHP Developer's Handbook' (Sams 2002). They have taught numerous subjects at RMIT University in Melbourne Australia, covering PHP, software engineering, distributed programming and networking. They introduce PHP to hundreds of new people each year. As Tangled Web (www.tangledweb.com.au) they provide consulting and development services to a range of clients.
Web services are the next evolutionary step for the World Wide Web. Rather than providing static data as pages, or forcing dynamic programs to provide an interface to standards better suited to static files, newer standards allow for greater interoperability and flexibility. Web services are programs that provide functionality to others through protocols such as SOAP. The services need to provide some metadata to describe their functionality and interface, usually in the form of an XML Web Services Description Language (WSDL) document. In order to be used by others, web services can register themselves with a Universal Discovery, Description and Integration (UDDI) directory. Web services are created and provided so that they can be combined into new applications. These services are based on open standards and protocols. It seems only logical to use an open language to implement them. While it is certainly possible to use SOAP, XML and UDDI under the banner of Microsoft's .NET platform, it makes a lot of sense to utilise the extensive web service support available in PHP, itself an Open Source web scripting language. Using PHP and open standards will not only allow you to do more with fewer resources, but also ensure that you are not locked into using proprietary extensions to the standards. In this tutorial, we will cover the terminology, concepts and protocols that are usually described under the umbrella of web services. We will also provide and examine sample code using PHP with SOAP, XML, WSDL and UDDI. We will sum up with a discussion of what is needed for web services to evolve from a useful tool for certain tasks to the normal way of constructing web applications. Material zum Vortrag: Leider kein weiteres Material vorhanden. |
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