PHP:
<form method="post" action="members.php">
Koop stenen :
<input type="text" name="steen"/>
<input type="submit" name="submit" value="koop" />
</form>
<form method="post" action="members.php">
</form>
<?
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (isset($_POST[submit])) {
$steen = $_POST[steen];
$prijssteen = 5;
$goed = ($row[geld] - ($steen * $prijssteen));
$sql = "UPDATE members SET geld='$goed' WHERE username='$_SESSION[username]'";
$result = mysql_query($sql);
} elseif (isset($_POST[submit2])) {
$goed = ($row[geld] + 20);
$sql = "UPDATE members SET geld='$goed' WHERE username='$_SESSION[username]'";
$result = mysql_query($sql);
}
}
?>
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