(usehost) Hospedagem de Sites - Recife - PE (Hosting, E-mail Marketing, Comércio Eletrônico)

//Username:
<?php echo $_SERVER['PHP_AUTH_USER'];?>
//Password:
<?php echo $_SERVER['PHP_AUTH_PW'];?>

The Code

<?php 

$config['admin_username'] = "demo";
$config['admin_password'] = "demo";

if (!($_SERVER['PHP_AUTH_USER'] == $config['admin_username'] && $_SERVER['PHP_AUTH_PW'] == $config['admin_password'])) {
    header("WWW-Authenticate: Basic realm=\"Papermashup.com Demo Admin\"");
    header("HTTP/1.0 401 Unauthorized");
	echo 'This is what happens if you press cancel';
	?>
<?php
    exit;
}
// if the username and password match show the rest of the content

?>

Be careful when coding the HTTP header lines. In order to guarantee 
maximum compatibility with all browsers, the keyword “Basic” should be 
written with an uppercase “B”, the realm string must be enclosed in 
double (not single) quotes, and exactly one space should precede the 401 code in the HTTP/1.0 401 header line.