An authentication system allows certain online material to be accessible only to a select few. This tutorial illustrates the basic construction of an authentication system using PHP.
Occasionally a site administrator will want to make certain material available online, but also have it accessible to only a select few. Some examples of this might be student records, personalized information, email and even personal photo albums.
Of course there are many ways to restrict access to information ranging from web server configurations to third party programs. In this tutorial, we'll take a look at the basic theory behind a user authentication system using PHP.
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