php apache PHP_AUTH_USER用户登录的方法
PHP 的 HTTP 认证机制仅在 PHP 以 Apache 模块方式运行时才有效,因此该功能不适用于 CGI 版本。在 Apache 模块的 PHP 脚本中,可以用 header() 函数来向客户端浏览器发送“Authentication Required”信息,使其弹出一个用户名/密码输入窗口。当用户输入用户名和密码后,包含有 URL 的 PHP 脚本将会再次和预定义变量 PHP_AUTH_USER、PHP_AUTH_PW 和 AUTH_TYPE 一起被调用,这三个变量分别被设定为用户名,密码和认证类型。预定义变量保存在 $_SERVER 或者 $HTTP_SERVER_VARS 数组中。系统仅支持“基本的”认证
$authorized = FALSE;
if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
$authFile = file("./password.txt");foreach ($authFile as $login) {
list($username, $password) = explode(":", $login);
$password = trim($password);
if (($username == $_SERVER['PHP_AUTH_USER']) && ($password == md5($_SERVER['PHP_AUTH_PW']))) {
$authorized = TRUE;
break;
}
}
}// If not authorized, display authentication prompt or 401 error
if (! $authorized) {
header('WWW-Authenticate: Basic Realm="Secret Stash"');
header('HTTP/1.0 401 Unauthorized');
print('You must provide the proper credentials!');
exit;
}?>

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