问题
I need to know if a person that comes to my website went from an another specific website. Example:
- User A visits www.youtube.com/myvideo and clicks on a link to my website.
- User B visits google, search my website and click the link.
Results Message on my page:
- User A:
Welcome! You already know how it works, register now! - User B:
Welcome! Please watch our video first at www.youtube.com/myvideo
My question is:
- Is it possible to know the last url the user visited before entering my page?
I already tried$_SERVER['HTTP_REFERER']with PHP, but it's not working correctly and I read that does not work on all browsers. - Is there any language or php script to get this url, working on all browser correctly?
回答1:
The HTTP referer header is the only way. This is the data that is given to you in PHP via $_SERVER['HTTP_REFERER'].
Note that this header will work in most cases. Also note that it can be easily spoofed.
回答2:
Why not add a GET variable to the link on youtube - www.yoursite.com/?referrer=youtube
For discretion and appearance you could rewrite the URL to something like www.yoursite.com/youtube
回答3:
<?php
if (strpos($_SERVER['HTTP_REFERER'],'youtube') !== false){
echo 'Welcome! You already know how it works, <a href="/register">register now!</a>';
} else {
echo 'Welcome! Please watch our video first at <a href="www.youtube.com/myvideo">www.youtube.com/myvideo</a>';
}?>
来源：https://stackoverflow.com/questions/11335873/get-last-page-visited