try using:
header <>("Cache-control: private");

i'm not sure that will work, try playing with header cache-control. anyway
as Bastien metioned it is better to have your form redisplayed with values
the user entered when validation failed rather than asking the user to click
the back button of their browser.

try this sample (not tested, too lazy :) but should work):

$var1    = NULL;
$var2    = NULL;

if (isset($_POST)) {
   $var1    = $_POST['var1'];
   $var2    = $_POST['var2'];

echo '<form method=\'post\'>';
echo "<input type='text' name='var1' value='$var1' />";
echo "<input type='text' name='var2' value='$var2' />";
echo '<input type=\'submit\'>';
echo '</form>';


On 1/1/07, Flint Million <[EMAIL PROTECTED]> wrote:

This might not be relavent for this forum, so if not please direct me
to the proper one; although I do like to keep my email list
subscriptions down.

I have a custom application in PHP in which a user fills out a form of
information. When the user submits, I perform sanity checking on the
user's submitted data and refuse to actually process/insert it if
those checks fail. However, my users are complaining that when they
press back to correct, all the data is gone from the form and they
have to re-enter it all. I know many websites that can retain the form
data when someone presses back; how is this done?

Flint M

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