Rookie PHP error

[JonEberger]

Everyone,

So, I'm writing a simple webpage that requires some "if-then" type logic for screen output.

A user inputs a series of values in an HTML form (with appropriate PHP variables previously declared), and depending on the values entered (given a series of if-then logic statements), a string is placed in the variable $my_string. Then, using the statement "echo $my_string;" that string is printed to the web-page.

The problem is that I would love to refresh the page so that, before a user inputs values, there is nothing printed to the page (i.e., a page with no output). But, once a user inputs his/her values, that string remains present on the page (even through a refresh).

I have tried to clear variables (using my limited PHP knowledge) and to use the session_destroy() command. I've also cleared variables. However, I cannot remove that darn string output.

Any ideas?

Jon

[AlexDudko]

Isn't it a simple browser cache case?
Try to close the browser and then reopen it.

[Min]

I don't think so. I think you need to check whether all the html form is filled using is_empty or isset (forgot the real function name). That way you can detect the first load of the page and do not display the string.

[hatstack]

Like Min said, you can use isset, but I would personally just create a separate php processing page. Then again, this sounds more like something I'd do with JS as opposed to PHP; all you really want is a dynamic web page output based on several variables, that could easily be done with JS in just a few minutes without having to access a server side program.

[AlexDudko]

It's hardly possible to give some advice without seeing the script...