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  Tutorial: PHP User Authentication User Authentication Using PHP Tutorial

This tutorial describes three methods to authenticate a user. First is by hardcoding the user info in the script. Second, check the user information in the database. Third is by adding image verification in the login form where the user must enter the ran

Tutorial Details:

PHP Tutorial

This is a more advance method of user authentication. We can prevent any automatic login by a robot ( script ) by using this method
All three of these methods will use the session. Since session is supported by PHP by default you don't need to configure anything to use it but you do need to use a recent version of PHP. By recent i mean greater than PHP 4.3.2. Using lesser than that version may cause the script to work only occassionally ( sometimes it won't work at all ).

For the third method you will need GD library which is already bundled in PHP but you will need to enable the GD support before using the library.
To see if GD library is already enabled save the following code, execute it, and see what the result is
Source : gdtest.phps
if (function_exists('imagecreate')) {
echo "GD Library is enabled
\r\n
";

var_dump(gd_info());
echo "
";
} else {
echo 'Sorry, you need to enable GD library first';
}


 

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PHP User Authentication User Authentication Using PHP Tutorial

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PHP User Authentication User Authentication Using PHP Tutorial

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