Extracting price from cart session variable

[amax]

Hi All, I would love some advice on this as I have got myself stuck.
I am trying to build a shopping cart, and have all the details stored in a session variable as below:

$cart = "ProductID=7|ProductName=test 2|ProductDescription=THIS IS A TEST 2 UPLAOD FOR|ProductCategory=amazing|ImagePath=/photo2.jpg|ProductSize=small|Price=10|Quantity=6,ProductID=6|ProductName=mycart t|ProductDescription=this is a test upload |ProductCategory=lifestyle|ImagePath=/30Days.jpg|ProductSize=large|Price=20|Quantity=3";

What I now need to be able to do is extract and sum all the Price= parts. Is this possible in some way using something like:

$break1 = explode ("|", $cart);
for ($i=0; $i< count ($break1); $i++){
echo $break1[$i]."<br />";
}

followed by something else. Im not really sure what is the best way to go about this now, and how to actually sum the numbers. What I want to end up with is a $total_price variable value from the $cart variable if possible.

[Weedpacket]

Why store it like that? Why not store it in a form you can actually work with without extra mucking around?

$products = array();
foreach(explode(',', $cart) as $product_in_cart)
{
	$product = array();
	foreach(explode('|', $product_in_cart) as $pair)
	{
		list($key, $value) = explode('=', $pair);
		$product[$key] = $value;
	}
	$products[] = $product;
}

print_r($products) to see what that gets (assuming no additional silliness in the format it ought to be more like what should have been stored in the session in the first place).

[richie]

You're basically asking people to write your code. You should consider paying somebody for something like this.

First, to get the individual records you need to:
$record = explode(',' $cart);

foreach ($record as $value)
{
$break1 = explode('|', $value);

for ($i=0; $i< count ($break1); $i++)
{
if(strpos($break1[$i], 'Price=')!==false || strpos($break1[$i], 'Quantity=')!==false)
{
list(,$numval) = explode('=', $break1[$i]);
$record_array[] = $numval;
}
}
$price_array[] = array_product($record_array);
}

$total_price = array_sum($price_array);

[amax]

Dear Weedpacket, richie, thanks a million for your feedback, I have learned lots this weekend. Ritchie, I never knew of the list construct, excellent. I ended up only needing one loop of the string to get the total price value, here is the code for anyone else who may be interested:

$break1 = explode('|', $cart);

	for ($i=0; $i< count ($break1); $i++)
	{

			if(strpos($break1[$i], 'Price=')!==false)
			{
			list(,$numval) = explode("=", $break1[$i]);
			$record_array[] = $numval;
			}



	}

$total_price = array_sum($record_array);

echo $total_price;

PS: I play with PHP for fun when I get time, not as a living, so perhaps stating that I should pay someone when looking advice on a FORUM may be a little harsh. Being a designer, the best way I learn is from looking at others code as I find it difficult to attempt something like the above from scratch at present. Even with the small snippet on actually manipulating a string, Im sure you appreciate it does not have commercial value. My cart evolved from learing about PHP sessions to a tutorial I wanted to tweak, then got totally lost as I was useless at arrays.

All part of the fun. Thanks for the help guys,a s I said, learned lots from your examples