一个重定向脚本，用于执行上一页的完整URL路径

I was wondering if this is even possible... I am working on this flow

A user is on "ask-now" (http://domain.com/ask-now/) page and click "ask" link, he will be redirected to "redirect.php" and "redirect.php" will redirect to answer.php but the URL of answer.php must carry the full url of http://domain.com/ask-now/ Like this form http://domain.com/answer.php/?ask=http://domain.com/ask-now/

and everytime user click "ask" on any webpage on my website they will always redirected to http://domain.com/answer.php/?ask=( THE FULL PATH URL WHERE THEY CAME FROM ).

Can someone help me please? :)

FLOW UPDATE as Kumar requested. Thanks for the help buddy.

Detailed Version

I have a website http://domain.com/. The website has lot of pages http://domain.com/page1/ --- http://domain.com/(and son on) LOT! Each of the page has a anchor text "ASK" which is link to http://domain.com/redirect.phpand redirect.phpwill redirect to http://domain.com/answer.php.

What I want is the http://domain.com/answer.php will carry the full path url of the previous page where the user came from. and show the url like this http://domain.com/answer.php/?ask=(THE FULL PATH WHERE THE USER CAME FROM) .

Example: The user is from http://domain.com/page100/ and he click the link ask which is redirected to answer.php now, he is now on answer.php page and he will see the full url above is http://domain.com/answer.php/?ask=http://domain.com/page100/

I think I have explained very well..

Thank you Kumar. Hope you can solve this!

in redirect.php add this logic

if($_SERVER["HTTP_REFERER"]=="http://domain.com/ask-now/"){
    $location="http://domain.com/answer.php/?ask=".$_SERVER["HTTP_REFERER"];
    header("Location: $location");
}

You can change your logic according to your requirement.

Simply save the current users' page to COOKIE or his SESSION, and get it later. I suggest this way because HTTP_REFERER is not always transmitted.

For example:

1. User visits http://domain.com/ask-now/, php-script sets cookie, which saves currrent page url. After that it goes redirect to the answer.php:

setcookie('ask_page', $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"], time() + 3600, /'); header("Location: /answer.php");

1. At the answer.php you will get the previous page from cookie:

echo $_COOKIE['ask_page'];