php - $_SERVER ['SERVER_ADDR' ] 可以安全依赖吗？

Question

我的站点严重依赖于 $_SERVER['SERVER_ADDR']。我可以信任检索到的数据吗？有没有可能找到空字符串？

Answer 1

我引用了一些php引用

这似乎取决于托管 PHP 的服务器(尤其是 apache ， IIS ...)

http://php.net/manual/en/reserved.variables.server.php

On Windows IIS 7 you must use $_SERVER['LOCAL_ADDR'] rather than $_SERVER['SERVER_ADDR'] to get the server's IP address.

还有一个。

Windows running IIS v6 does not include $_SERVER['SERVER_ADDR']

If you need to get the IP addresse, use this instead:

<?php $ipAddress =
 gethostbyname($_SERVER['SERVER_NAME']);
?>