哪个是获取ip的更好方法
在PHP中获取IP地址的更好方法是什么:
What is the better way of getting the IP address in PHP:
getenv('REMOTE_ADDR');
或者，
$_SERVER['REMOTE_ADDR'];
请告诉我两者之间的区别(如果有).
please tell me the difference, if any, between the two.
推荐答案
getenv() 可用于访问任何环境变量(PHP 只是将 REMOTE_ADDR 注册为脚本的环境变量)，而使用 $_SERVER 显然只能访问$_SERVER 超全局的内容.
getenv() can be used to access any environment variables (PHP simply registers REMOTE_ADDR as an environment variable for the script), while with $_SERVER you obviously only access the contents of the $_SERVER superglobal.
常见的方法是为此使用 $_SERVER，尽管它在功能方面并没有真正的不同.
The common approach is to use $_SERVER for this, although it doesn't really make a difference functionality-wise.
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