December 2010
Intermediate to advanced
363 pages
12h 21m
English
book
Pro PHP Security: From Application Security Principles to the Implementation of XSS Defenses, Second Edition
by Chris Snyder, Michael Southwell, Thomas Myer
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How Persistent Sessions Work
HTTP communications were originally imagined to be inherently stateless; that is, a connection between two entities exists only for the brief period of time required for a request to be sent to the server, and the resulting response passed back to the client. Once this transfer has been completed, the two entities are no more aware of each other than they had been before the original connection was established.
The problem with this system is that, as the web began to be used for transactions (like purchases) far beyond those it was first designed for, those discrete connections began to be conceptually related: you would log in to a shopping site, retrieve information about products, choose products, and so forth. ...
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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.