如何找出引荐网址是什么？

Question

People come to my website from variety of other websites and I would like to know these referral urls? How can I do it in PHP?

Answer 1

You can get the referrer using $_SERVER['HTTP_REFERER'] . Note that it's very easy for the client to spoof this, so don't rely on it for anything important.

You can find out about other $_SERVER variables here .

Answer 2

$ref = getenv("HTTP_REFERER");

要么

$ref = $_SERVER['HTTP_REFERER'];

Answer 3

Use the system variable:

$_SERVER['HTTP_REFERER']

Check this answer for more details.

Determining Referer in PHP