Chapter 22. Using Session Control in PHP
In this chapter, we discuss the session control functionality in PHP.
Key topics covered in this chapter include
What session control is
Cookies
Steps in setting up a session
Session variables
Sessions and authentication
What Session Control Is
You might have heard people say that “HTTP is a stateless protocol.” This means that the protocol has no built-in way of maintaining state between two transactions. When a user requests one page, followed by another, HTTP does not provide a way for you to tell that both requests came from the same user.
The idea of session control is to be able to track a user during a single session on a website. If you can do this, you can easily support logging in a user and showing content ...
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