August 2006
Intermediate to advanced
810 pages
19h 15m
English
Content preview from PHP Cookbook, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 8. Web Basics
Introduction
Web programming is probably why you’re reading this book. It’s why the first version of PHP was written and what continues to make it so popular today. With PHP, it’s easy to write dynamic web programs that do almost anything. Other chapters cover various PHP capabilities, like graphics, regular expressions, database access, and file I/O. These capabilities are all part of web programming, but this chapter focuses on some web-specific concepts and organizational topics that will make your web programming stronger.
Recipes 8.1, 8.2, and 8.3 show how to set, read, and delete cookies. A cookie is a small text string that the server instructs the browser to send along with requests the browser makes. Normally, HTTP requests aren’t “stateful”; each request can’t be connected to a previous one. A cookie, however, can link different requests by the same user. This makes it easier to build features such as shopping carts or to keep track of a user’s search history.
Recipe 8.4 shows how to redirect
users to a different web page than the one they requested. Discovering
the features of a user’s browser is shown in Recipe 8.5. Recipe 8.6 shows the details of constructing a
URL that includes a get query string,
including proper encoding of special characters and handling of HTML
entities. Similarly, Recipe 8.7 provides
information on reading the data submitted in the body of a post request. Recipe 8.8 discusses a common web formatting need: displaying rows of ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.