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Script Name Username, Password Login PHP and MySQL Example Site This step-by-step guide presents a free cut-and-paste example code of a username and password login web based system. Developed using PHP, MySQL and JavaScript. Password Protection This graphical tutorial will show you how to password protect sections of your Web site with a username and password script. PHP-Based User Authentication This tutorial teaches you to initiate user authentication using PHP, and then to authenticate users by matching the value of the global variables $PHP_AUTH_USER, and $PHP_AUTH_PW to a list of valid usernames and passwords. The sample code included with this tutorial will show you how to use either hard-coded values, a flat file, an existing .htpasswd file or a database table to manage your valid usernames and passwords. This tutorial is intended for the PHP programmer who is generally familiar with authentication, but who would be interested in learning a practical method for authenticating access to one or more Web site pages. Using a page by page password system using mySQL One cool thing about php is that you can fairly easily validate users before displaying content on a page by page basis. Let's say you don't want to restrict the entire directory using htaccess, this is a neat alternative. This tutorial shows how to create a simple page-based login system using PHP and mySQL. Session Management with PHP4 One of the new great features with PHP4 is the session management feature. It allows you to store variables in a session 'object' during a user visit. This article discusses what a session and a session variable are, and what it can do. A Simple Sessions Tutorial This is a short tutorial on how to use the sessions (in PHP4) with a user, form-based login. This would be useful for just about any site where you had a "members only" area and wanted to validate the users from a database or anything else. The examples used authorize off of a MySQL database on the same server. User Authentication from a MySQL database Here is a step-by-step tutorial on how to create a user authentication system using PHP/MySQL. It takes you through creating an appropriate MySQL table, and a sample PHP login form script. Authenticate and Track Users with PHP This comprehensive 8-page online tutorial explains how to authenticate and track users with PHP. Main topics include: HTTP Authentication with PHP, Validation Against a Flat File, Authenticate Against a Database, Using Cookies, and Sessions and User Preferences.

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