function içindeki veriyi dışarıya aktaramıyorum ?

function cart() {
		echo '
				<thead>
					<tr>
						<th>Ürün</th>
						<th>Fiyat</th>
						<th>Adet</th>
						<th>Toplam</th>
						<th>Sepetten Çıkar</th>
					</tr>
				</thead>
				
				<tbody>
		';
	foreach($_SESSION as $name => $value){
		if($value>0){
			if(substr($name, 0, 5)=='cart_'){

				$id =substr($name, 5, (strlen($name)-5));
				$get=mysql_query('SELECT id,product_name,product_description,product_price,product_images FROM products WHERE id='.mysql_real_escape_string((int)$id));

				while ($get_row=mysql_fetch_assoc($get)){
					$sub=$get_row['product_price']*$value;
					echo '
					<tr class="even">
						<td>'.$get_row['product_name'].'</td>
						<td>'.number_format($get_row['product_price'], 2).' TL</td>
						<td>'.$value.' Adet - <a href="cart.php?add='.$id.'" title="Ekle">+</a> / <a href="cart.php?remove='.$id.'" title="Çıkar">-</a></td>
						<td>'.number_format($sub, 2).' TL</td>
						<td><a href="cart.php?delete='.$id.'">X</a></td>
					</tr>
			<input type="hidden" name="urun[siparis][]" value="'.$id.'" />
			<input type="hidden" name="urun[adet][]" value="'.$value.'" />';

					}
			}
			
		}
		$total += $sub;
	}
		echo '</tbody>';
	if($total==0){
	echo "<tr><td>Sepetiniz Boş</td></tr>";
	}else{
	echo 'Toplam: '.number_format($total, 2);
	}
	
}

global $total;

global $total;

	if($total==0){
	echo "<tr><td>Sepetiniz Boş</td></tr>";
	}else{
	echo 'Toplam: '.number_format($total, 2);
	}
	global $total;