caching of variables...how to clear

[Anon]

Just wondering....I have a multipage site that I am working on and I find that php sometimes caches variables.....even when the page is reloaded. For example: I have a mySql connect that gets all the usernames from the database and prints them into a dropdown list for the user to select. Now when I run the page through the first time I get all the entries from the database. But if I run the page (refresh) again after adding a few users to the db.....php print the old list without the updated users. Now there are cases where I like this (ie. signup forms where people have to hit the back button because of invalid info) but this is not a case where I want this to happen. Anyone have a solution to this?

[cheald]

I don't think the variables are being cached - you should be pulling this dataset from your database whenever the script is run. I'd suspect that you are looking at an old dataset in the script. Check your logic. As far as I know, PHP doesn't cache variables - you have to purposefully do it with sessions or cookies in order for that to happen.