August 2008
Intermediate to advanced
703 pages
16h 10m
English
Content preview from Pro Drupal Development, Second Edition
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CHAPTER 16Sessions
HTTP is a stateless protocol, which means that each interaction between the web browser and server stands alone. So how do you track a user as he or she navigates through a series of web pages on a web site? You use sessions. Starting with version 4, PHP offers built-in support for sessions via the session family of functions. In this chapter, you'll see how Drupal uses PHP's sessions.
What Are Sessions?
When a browser first requests a page from a Drupal site, PHP issues the browser a cookie containing a randomly generated 32-character ID, called PHPSESSID by default. This is done by the inclusion of one line in the HTTP response headers sent to the browser the first time it visits the site:
HTTP/1.1 200 OK Date: Thu, 17 Apr ...Become 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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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.