[RESOLVED] form and memory

Greg_BigPhpAmat

Here is part of code (most importand part) where I sent my form.


function host_ip()
{

global $HOST;


$cache = $_SERVER['REMOTE_ADDR'];
$proxy = $_SERVER['HTTP_X_FORWARDED_FOR'];


if($proxy == '')
   { $HOST = gethostbyaddr($cache); }  //@gethostbyaddr($cache);
else
    {
    list ($lok, $hos) = split('[,]', $proxy);
    $czysty = ltrim($hos);
    $hosti = gethostbyaddr($czysty);  

    if($hosti == $czysty || $hosti == '') 
     { $hosti = gethostbyaddr($cache); };  //@gethostbyaddr($cache);
    $HOST = "$hosti ($lok)";
    };
};
host_ip();
 $hoscik=$HOST;
 $phone=$_POST['phone'];
 $countries=$_POST['countries'];
 $operatorzy=$_POST['operatorzy'];
 $temat=$_POST['temat'];
 $message=$_POST['message'];
 $ip= $REMOTE_ADDR;

Can somebody tell me where data is stored after process this part of code?
When I refresh page all $variables are remembered by computer and I want to clear it so $phone, $countries etc....will be clear.

bradgrafelman

Since you're not storing the data in sessions or anything like that, the data is gone as soon as PHP finishes processing the request.

Now, two reasons I can think of why you might still see the data if you "refresh" the page:

Browser cache. Sure, you said "refresh" the page, but browsers can still cache pages to your computer and display those locally cached versions instead of making a new request. Certain browsers have keystrokes (e.g. Shift+F5 or Ctrl+F5) to force a refresh to skip the local cache and actually refresh the page from the remote server.
Form resubmission. If you try to refresh the page you're sent to once you submit a form via the POST method, most browsers will pop up a message explaining (one way or another) that in order to refresh the page, the browser has to re-send data that was POST'ed to get to the current page. If you're hitting refresh and just saying OK to any such messages that pop up, then there's your answer - you're sending the data back to the server every time you refresh, so that's why it seems like it's still there from the last request.

Greg_BigPhpAmat

bradgrafelman;10919721 wrote:
Since you're not storing the data in sessions or anything like that, the data is gone as soon as PHP finishes processing the request.

Now, two reasons I can think of why you might still see the data if you "refresh" the page:

Browser cache. Sure, you said "refresh" the page, but browsers can still cache pages to your computer and display those locally cached versions instead of making a new request. Certain browsers have keystrokes (e.g. Shift+F5 or Ctrl+F5) to force a refresh to skip the local cache and actually refresh the page from the remote server.

Form resubmission. If you try to refresh the page you're sent to once you submit a form via the POST method, most browsers will pop up a message explaining (one way or another) that in order to refresh the page, the browser has to re-send data that was POST'ed to get to the current page. If you're hitting refresh and just saying OK to any such messages that pop up, then there's your answer - you're sending the data back to the server every time you refresh, so that's why it seems like it's still there from the last request.

Thx. Now that is clear. Thank You. .....but what should I do?