if ($_SERVER['PHP_AUTH_USER']!='user' || $_SERVER['PHP_AUTH_PW']!='123456') {
header('WWW-Authenticate: Basic realm="MyFramework Realm"');
header('HTTP/1.0 401 Unauthorized');
echo "You must enter a valid login ID and password to access this resource.\n";
exit;
}
上面的代码段作用就是强制用户输入认证,用户名跟密码可以自己设置