How to client-cache user's inputs?

Anon

HTTP issue, header(" ???? ");
Please, can anyone tell me how to force the browsers to remember what people have typed in the textareas input form, so that when they hit the BACK button, the textareas don't get blanked...

Thanks, Siva

Anon

Find a book about client-side scripting (javascript).

Anon

Thanks, may I know if this is the only way?
I've seen a JavaScript-free HTML page that enabled the browser to cache the user's input inside forms. Unfortunately I don't know how to see how the HTTP headers were set in those pages?

Anon

There may be a difference between using GET and POST with regard to your wish, but I have never researched that.

To analyze HTTP-headers, you may use this tool which I once wrote:
http://www.mdb.ku.dk/tarvin/http-tool/

If you want a nice command-line tool for analyzing HTTP-responses, then I recommend "cURL":
http://curl.haxx.se/

Anon

Great! With the tools you pointed to me, I discovered that the header() function aren't affecting the real HTTP output!!
My Apache outputs the following HTTP headers:

HTTP/1.1 200 OK
Date: Mon, 25 Dec 2000 14:15:05 GMT
Server: Apache-AdvancedExtranetServer/1.3.14 (Linux-Mandrake/2mdk) PHP/4.0.4
X-Powered-By: PHP/4.0.4
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Last-Modified: Mon, 25 Dec 2000 14:15:06 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: PHPSESSID=4b36ed14470df5d2491c4dad1f9f99e8; path=/
Connection: close
Content-Type: text/html

Note the Cache-Control and Pragma headers. I tried to control them through:

A) writing in the php file (before any html output)
header ("Cache-Control: only-if-cached, max-age=20");

😎 placing .htaccess file in the same directory where the php file is placed:
Header unset Cache-Control
Header unset Pragma

(A) neither (😎 isn't working...
I checked the httpd.conf file for the overriding .htaccess permission, but it seems all to be ok.

What may be??

Anon

You can't control the headers because you have session support active. Sessions work best in an absolutely caching-free environment.