PHP Simple Page Authentication / Password Protect

PHP Password Protect Website

<?
header("Content-type: text/html; charset=utf-8");
if(empty($_SERVER['PHP_AUTH_USER'])) {
    header('WWW-Authenticate: Basic realm=""');
    header('HTTP/1.0 401 Unauthorized');
    echo 'Password Required';
    exit;
} else {
    $password = "password";
    if(
    ($_SERVER['PHP_AUTH_PW'] != $password)) {
  	header('WWW-Authenticate: Basic realm=""');
		header('HTTP/1.0 401 Unauthorized');
		echo 'Login and Password Required';
		exit;
    } else {
        echo "<title>".(isset($title)?$title:"TITLE")."</title>\n";
    }
}
?>