Preventing multiple form submissions

[alex]

Code: [Select]

<?php @session_start();
if(isset($_POST['submit']))
{
if (!isset($_SESSION["reload"]))
$_SESSION["reload"] = 0;
$_SESSION["reload"] = $_SESSION["reload"] + 1;
if ($_SESSION["reload"] > 1)
{
echo"Error";
die;
}
}else{
?>
<form name="maForm" action="index.php" method="post">
<input type="submit" value="Submit" name="submit">
</form>
<?php } ?>