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Learning PHP, MySQL, JavaScript, and CSS, 2nd Edition by Robin Nixon

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Chapter 12. Cookies, Sessions, and Authentication

As your web projects grow larger and more complicated, you will find an increasing need to keep track of your users. Even if you aren’t offering logins and passwords, you will still often need to store details about a user’s current session and possibly also recognize users when they return to your site.

Several technologies support this kind of interaction, ranging from simple browser cookies to session handling and HTTP authentication. Between them, they offer the opportunity for you to configure your site to your users’ preferences and ensure a smooth and enjoyable transition through it.

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