Unset question or something to clear variables.

[Beauford]

I have a form that users enter info into and then it's put into a mysql database. How do I clear the variables so that the user can not hit refresh on their browser and add another record. I've tried unset($var) or unset($_POST), but I must be missing something on what unset actually does as all the variables are still there when refresh is used.

 

I am using the same page for everything. I know I could use a seperate page, but it is all done this way now and I don't want to have to change everything.

 

Thanks

[laffin]

nope $_POST is sent by the browser

someone hits refresh $_POST is resent by the browser

so dun matter what yer script does.

 

u have to setup an external variable, somehow.

 

either by cookies, sessions, file or a db field.

 

[themistral]

You could use

 

<?php 

// your form action here 

header('Location:your_page.php');
?>

 

to redirect the page after the form processing - this will then lose the $_POST variables.

the header will only run as long as you are not echoing anything to the browser.

[Beauford]

You could use

 

<?php 

// your form action here 

header('Location:your_page.php');
?>

 

to redirect the page after the form processing - this will then lose the $_POST variables.

the header will only run as long as you are not echoing anything to the browser.

 

Then as I figured, you get the dreaded:

 

Warning: Cannot modify header information - headers already sent by (output started at ..............\rdr\rdr_registration.php:160) in ............\rdr\rdr_registration.php on line 272

 

[Beauford]

So the question is then, how do I do this?

 

Basically I have a form that gets filled out.

 

After it is filled out and the user submits it I want to display a message that says, Thanks Bob, you are now registered and your ID is AAAAAABBB.

 

I have it working fine using one page, but then I get my original problem of the user hitting refresh and adding the record again.

 

Thanks