php 使用http 头认证

define('ADMIN_USERNAME','boss'); // Admin Username
define('ADMIN_PASSWORD','xxboss'); // Admin Password
if (!isset($_SERVER['PHP_AUTH_USER']) || !isset($_SERVER['PHP_AUTH_PW']) ||
$_SERVER['PHP_AUTH_USER'] != ADMIN_USERNAME ||$_SERVER['PHP_AUTH_PW'] != ADMIN_PASSWORD) {
Header("WWW-Authenticate: Basic realm=\"BOSS Login\"");
//Header("HTTP/1.0 401 Unauthorized");
}else{
if( $_SERVER['PHP_AUTH_USER'] == ADMIN_USERNAME && $_SERVER['PHP_AUTH_PW'] == ADMIN_PASSWORD){
$isShowTxt = 1;
}
}