I generate random key and put it on the hidden input. When I get submit from
client, I compare, is this key actual or old.
<?php
session_start();
session_register('key');
if ($user_key == $key){
echo "Normal submit<br>";
}else{
echo "Refresh";
}
mt_srand((double)microtime()*1000000);
$key = md5(mt_rand(0,9999999));
$html = "<FORM action=\"test.php\" method=\"post\">\n".
"<INPUT type=\"text\" name=\"text\" /><br>\n".
"<INPUT type=\"submit\" />\n".
"<INPUT type=\"hidden\" name=\"user_key\" value=\"$key\" />\n".
"</FORM>\n";
echo $html;
?>
Raivo Tali
"Ryan Adorable" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi,
>
> I created a poll program for my homepage. When i vote some field in my
database gets incremented, but after successfully voting when i clicked on
reload/refresh of my browser the said field is also incremented. How can I
fix/avoid this problem?
>
> Hoping for a reply.
> Thanks
>
> Ryan
>
> _____________________________________________________________
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