Protect page using password in PHP

Using this code you can protect a single page .users have to enter password to view the page .The code check if correct password and username .

Code:

<?php

function checklogin($username, $password){
    if (
            (
                !isset($_SERVER['USER_USERNAME']) ||
                (
                    isset($_SERVER['USER_USERNAME']) &&
                    $_SERVER['USER_USERNAME'] != $username
                )
            ) &&
            (
                !isset($_SERVER['USER_PASSWORD']) ||
                (
                    isset($_SERVER['USER_PASSWORD']) &&
                    $_SERVER['USER_PASSWORD'] != $password
                )
            )
        )
    {
        header('WWW-Authenticate: Basic realm="Login"');
        header('HTTP/1.0 401 Unauthorized');
        echo 'Please login first.';
        exit;
    }
}
?>

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
Have thanks: 74 time

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