stuck implementing a simple shopping cart

[Duke555]

hello,

i am trying to implement a very simple Shopping cart using an arrray as a database and i got stuck. i was wondering if anyone can help. there are a few issues with the code below. 1st of all i was trying to pass an array that acts as a DB ($product[]) as a parameter to the my_cart.php (as opposed to copying and pasting the same array into my_cart.php file). I also tried testing $_POST[] for what values it has.

I get only output like:

 

===============Printing POST[] array=====

Array ( [submitted] => 1 [$name] => 0 ) =====

 

Also another issue is how do i go through the users input (assuming user will enter a number into at least one of the fields as opposed to leaving them as value="0") and the calculate a total price for each and every item user had selected? I assume it has to be done in my_cart.php

 

             

THANK YOU

 

should be something like?: 

//assuming $product array was passed down from products.php
foreach($product as $name => $description)
{
    // if user selected an item to buy
     if($POST["$name"]>0)
    {
         echo $name."<br>";
         echo $description['Price']."<br>";
         total += $description['Price'];
    }
}
echo "you total for today is :".$total;

 

/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////

 

<?//products.php
$product =  array('Men\'s Roller Blades'=> array(
                            Price => 69.95,
                            Shipping => 0.10 //shipping as a % of price
                            ),
		'Women\'s Roller Blades'=> array(
                            Price => 63.95,
                            Shipping => 0.10 //shipping as a % of price
                            ),
            'Helmet'=> array(
                            Price => 34.99,
                            Shipping => 0.05 //shipping as a % of price
                        ),
		'Knee Pads'=> array(
                            Price => 22.99,
                            Shipping => 0.08 //shipping as a % of price
                        ),
            'Knee and Elbow Pads'=> array(
                            Price => 29.99,
                            Shipping => 0.08 //shipping as a % of price
                            ));

	// Create a table and a form:
	echo '<table border="0" width="100%" cellspacing="2" cellpadding="2" align="center">
	<tr>
		<td align="left" width="20%"><b>Product:</b></td>
		<td align="left" width="15%"><b>Price:</b></td>
		<td align="left" width="15%"><b>Shipping:</b></td>
		<td align="left" width="10%"><b>Qty:</b></td>
		<td align="right" width="15%"><b>Total Price:</b></td>
	</tr>
<form method=POST action="my_cart.php" >
<input type="hidden" name="submitted" value="1" />
';


//traversing outer array in this loop
//'name' is the 'key' and 'description' is the 'value' of this outer array
while (list($name, $description) = each($product))
{
	//calculating grand total of an item's 'price' and 'shipping' which are stored in the inner
	//array and are pointed by the keys 'price' and 'shipping' respectively
	$grand_total = calc_total($description[Price], $description[shipping]);
	$shipping = $description[shipping] * $description[Price];
?>
<tr>
	<td align="left"><? echo $name;?></td>
	<td align="left"><? echo number_format($description[Price], 2);?></td>
	<td align="left"><? echo number_format($shipping, 2); ?></td>
	<td align="left"><input type="text" size="3" name="$name" value="0" /></td>
		<td align="right"><? echo number_format($grand_total, 2);?></td>
	</tr>
	<?
}
	// Print the footer, close the table, and the form:
	?><tr>
		<td colspan="4" align="right"><b>Total:</b></td>
		<!--<td align="right">$' . number_format ($total, 2) . '</td>-->
		<td align="center">TEST</td>
	</tr>	
	<tr>
		<td colspan="6" align="center">TEST</td>
	</tr>
	</table><div align="center"><input type="submit" value="SUBMIT"  /></div>
</form>
<FORM ACTION="my_cart.php" NAME="database">
<INPUT TYPE="HIDDEN" NAME="product[]" VALUE="<?=$product?>">
</FORM>
<?
/*
	Purpose: function CALCulates a total (incl. tax) price payable by the consumer a given item
	INPUT: price and shiping for each item
	OUTPUT: total price which includes tax
*/

?>
<?
function calc_total($price, $shipping)
{
	#tax rate is constant
	$tax = 0.08;
	$total_price += $price;
	$total_tax += $tax * $price;
	$total_shipping += $shipping * $price;
	$grand_total = ($total_price + $total_tax + $total_shipping);
   
	return $grand_total;
}	
?>
<br>
<br>
    </p>
</td>
</tr>
</TABLE>
</div>
<?
ob_end_flush();
?>

////////////////////////////////////

here is my_cart.php

<?
//start output buffer to avoid issues with the header()
ob_start();
echo "===============Printing POST[] array";	
//print_r($MySelect);

echo "=====<br>";
print_r($_POST);
echo "=====<br>";
print_r($product);
?>
<br>
<br>
<B>Total (including tax and shipping): $<?// echo number_format($grand_total, 2); ?></B>	
<br>
<br>
<br>
<br>
<br>
<br>
    </p>
</td>
</tr>
</TABLE>
</div>

<?
//flush the output buffer AFTER all the header() functions may have been used and thus avoid errors
//assoc. with outputting before hearder() functions
ob_end_flush();
?>