How to require a re-post from the visitor

[SFBassman]

I want to require visitors to post data each time they want to visit a certain page (one that is created by a CGI script.) I have visited pages that have stated "Page has expired", or "You must re-post data in order to continue".
How would I accomplish this without using SSI?

Wouldn't the test for new data have to be written into
the dynamically generated page?

 

[Rieekan]

Actually, you can get the results you'd like by setting the header information for the page for expirations and caching to expire immediately. Something like the following:

print header(	-type => 'text/html',
		-cache_control => 'no-cache',
		-expires => '-1d',
		-nph);

The line [font color=red]-expires => '-1d',[/font] has some information that you'll need to be aware of.
[ul]
[li]d stands for days, you can substitute this with m for minutes.[/li]
[li]The number listed shows how long the page will stay in memory on the client machine. Placing a negative number here will make the page expire immediately[/li]
[/ul]

Hope this helps!
- Rieekan