(!isset($PHP_AUTH_PW))) {
/* No values: send headers causing dialog box to appear */
header('WWW-Authenticate: Basic realm="My Private Stuff"');
header('HTTP/1.0 401 Unauthorized');
echo 'Authorization Required.';
exit;
} else if ((isset($PHP_AUTH_USER)) && (isset($PHP_AUTH_PW))){
/* Values contain some values, so check to see if they're correct */
if (($PHP_AUTH_USER != "validname") (北联网教程,专业提供视频软件下载)
……