PHP User Authentication Without Database

Here are some methods to describe PHP User Authentication Systems which are login systems indeed. These systems are not 100% secure though. Security comes with database, sessions, checks and data encryption. Following examples cover:

• Simple and Basic User Authentication Methods Ever
• Basic Authentication 2
• User Authentication 1 – A Step Ahead From Basic Authentication – Using Sessions
• User Authentication 2 – Using sessions – Check In Different Pages Via Checking Sessions
• User Authentication – Using Sessions – External File – Final and Easy

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