January 2016
Intermediate to advanced
180 pages
4h 21m
English
Content preview from PHP Web Services, 2nd Edition
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Chapter 1. HTTP
HTTP stands for HyperText Transfer Protocol, and is the basis upon which the Web is built. Each HTTP transaction consists of a request and a response. The HTTP protocol itself is made up of many pieces: the URL at which the request was directed, the verb that was used, other headers and status codes, and of course, the body of the responses, which is what we usually see when we browse the Web in a browser. We’ll see more detailed examples later in the book, but this idea of requests and responses consisting of headers as well as body data is a key concept.
When surfing the Web, ideally we experience a smooth journey between all the various places that we’d like to visit. However, this is in stark contrast to what is happening behind the scenes as we make that journey. As we go along, clicking on links or causing the browser to make requests for us, a series of little “steps” is taking place behind the scenes. Each step is made up of a request/response pair; the client (usually your browser, either on your laptop or your phone) makes a request to the server, and the server processes the request and sends the response back. At every step along the way, the client makes a request and the server sends the response.
As an example, point a browser to http://lornajane.net and you’ll see a page that looks something like Figure 1-1; either the information desired can be found on the page, or the hyperlinks on that page direct us to journey onward for it.
The web page arrives ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.