<?php

define( 'HTTP_AUTH_REALM',          '' ); // login üzenet
define( 'HTTP_AUTH_USER',           '' );
define( 'HTTP_AUTH_PASSWORD',       '' );
define( 'PROTECTED_FILE_PATH',      '' ); // html fájl útvonala

class HTTPAuth {

    public $username;
    public $password;
    public $realm;
    public $user = array();

    public function __construct( $username, $password, $realm = '' ) {
        $this->username = $username;
        $this->password = $password;
        $this->realm = $realm;
    }

    public function authenticate() {
        if ( $_SERVER['PHP_AUTH_USER'] !== $this->username || $_SERVER['PHP_AUTH_PW'] !== $this->password ) {
            header( 'WWW-Authenticate: Basic realm="' . $this->realm . '"' );
            header( 'HTTP/1.0 401 Unauthorized' );
            return false;
        } else {
            $this->user['username'] = $_SERVER['PHP_AUTH_USER'];
            $this->user['password'] = $_SERVER['PHP_AUTH_PW'];
            return true;
        }
    }
}

$httpAuth = new HTTPAuth( HTTP_AUTH_USER, HTTP_AUTH_PASSWORD, HTTP_AUTH_REALM );

if ( $httpAuth->authenticate() ) {
    include( PROTECTED_FILE_PATH );
} else {
    echo 'Permission denied';
}

?>