Mozilla Firefox PROBLEM ???

[ddragas]

I still don't get why is this hepening. If I'm browsing (testing) on local machine with IE 6 everithing is woorking nice, but if I'm browsing with Mozilla Firefox I get double records inserted into db, and everything that has something to do with database (update or insert) is is doing it double or twice.

here are two tables

FIRST TABLE
zaglavlje_ponuda

broj int(11)
datum varchar(12)
trajanje varchar(12)
kupac int(11)
id int(11) - primary k

SECOND TABLE
stavke_ponude

id int(11) - primary k
broj int(11)
sifra text
opis longtext
kolicina text
cijena text
popust text
vrijednost text
porez text
ukupno text


and this is code

<?

session_start();

$broj_ponude = $_SESSION['broj_ponude'];

?>

<?



echo "Broj ponude: " . $broj_ponude;



        $id = $_GET['id'];



        include('../stranice/con_db.php');

        

        $result = mysql_query("SELECT * from proizvodi where id = '$id'") or die (mysql_error());

        $row = mysql_fetch_array($result);

        

        $sifra = stripslashes($row["sifra"]);

        $naziv = stripslashes($row["opis"]);

        $cijena1 = $row["cijena"];

        

        $datum = time();

        $dana = 8;

        $sati = 24;

        $minuta = 60;

        $sekunda = 60;

        $valuta = $dana * $sati * $minuta * $sekunda;

        

        mysql_free_result($result);

        

            if(!isset($broj_ponude))

                {



                    $query_count_broj_ponude = mysql_query("select max(broj) as zadnji_broj_ponude from zaglavlje_ponuda ") or die (mysql_error());

                    $result_row_broj_ponude = mysql_fetch_assoc($query_count_broj_ponude); 

                    $zadnji_broj = $result_row_broj_ponude['zadnji_broj_ponude']; 

                    

                    $novi_broj_ponude = $zadnji_broj + 1;

                    

                    $broj_ponude = $_SESSION['broj_ponude'] = $novi_broj_ponude;

                    

                    $query = "insert into zaglavlje_ponuda

                                    (broj, datum, trajanje) values

                                    ('$broj_ponude', '$datum', '$valuta')";

                    mysql_query($query) or die (mysql_error());

                }



        $slova=array(",");

        $izmjena=".";

        $cijena  = str_replace($slova, $izmjena, $cijena1);

        

        $porez = $cijena * (18.0328 / 100);

        $osnovica = $cijena - $porez;

        $kol = 1;

        $pop = 0;



        if(!empty($broj_ponude))

            {

                $query = "insert into stavke_ponude

                                (broj, sifra, opis, kolicina, cijena, popust, vrijednost, porez, ukupno) values

                                ('$broj_ponude', '$sifra', '$naziv', '$kol', '$osnovica', '$pop', '$osnovica', '$porez', '$cijena')";

                mysql_query($query) or die (mysql_error());

            }

        include('../stranice/disconect.php');

        

?>

I would aprecheate if someone could help me or just give me a good direction of resolving this problem.

Already 3 days trying to resolve this problem

Please help me

[Dylan B]

It's not a PHP problem, browser has nothing to do with the PHP. What is happening, or so I think, is the form is being submited twice. Try setting a five second cookie on submit and check if it is set before the script runs.