O'Reilly logo

Sams Teach Yourself PHP, MySQL by Julie C. Meloni

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 12. Working with Cookies and User Sessions

PHP contains numerous functions for managing and keeping track of user information, including both simple cookies and all-encompassing user sessions. Sessions use techniques built into the PHP language, making the act of saving state as easy as referencing a superglobal variable.

In this chapter, you will learn

  • How to store and retrieve cookie information

  • What session variables are and how they work

  • How to start or resume a session

  • How to store variables in a session

  • How to destroy a session

  • How to unset session variables

Introducing Cookies

You can use cookies within your PHP scripts to store small bits of information about a user. A cookie is a small amount of data stored by the user’s browser in compliance ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required