ADA3WRAFAS ASFASGAS

<?php
$sid = session_id();
$sql = mysql_query("SELECT * FROM keranjang, product WHERE id_session='".$sid."' AND keranjang.id_product=product.id");
$hitung = mysql_num_rows($sql);
if ($hitung < 1){
echo"<script>window.alert('Keranjang Masih Kosong....');
window.location=('index.php')</script>";
}
else {
while($data=mysql_fetch_array($sql)){
$subtotal=$data['price']*$data['qty'];
echo $subtotal;
$TOTAL+=$subtotal;
}
}
echo $TOTAL;