Codeigniter中如何检测来自用户的URL？

Question

How to detect URL from user came in Codeigniter?

For example, I am at page: /contact/ , after click the link with url /news/ at controller news I must detect the previous URL /contact/

Answer 1

You can probably grab the referring page using the PHP $_SERVER array.

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

Specifically: HTTP_REFERER

You may need to parse the string to get the part that you need.