array_sum() with multidimensional $_SESSION arrays

i have this array $cartSizes[$productid] where $productid is an array of 8 values (1-8). $cartSizes is stored in a $_SESSION array like this

$_SESSION['cartSizes'] = $cartSizes;

Code (markup):

an example of a $_SESSION['cartSizes'] array that has 2 $productid would be:

[cartSizes] => Array ( [8061ABL] => Array ( [1] => 0 [2] => 3 [3] => 4 [4] => 5 [5] => 0 [6] => 0 [7] => 0 [8] => 0 )[6105AAOAU] => Array ( [1] => 3 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [7] => 0 [8] => 0 ) )

i want to get the sum of $_SESSION['cartSizes']. but this doesn't work...i keep getting "0".

sum_array($_SESSION['cartSizes'])

Code (markup):

what's wrong?

 

array_sum() is only designed for simple arrays(). If you check in the PHP documentation pages (http://es.php.net/array_sum) and check the comments you will find a couple of ways to make it work with subarrays.

Hope it helps

 

Try something on the lines of:

$sums = array();
foreach ($_SESSION as $key => $value){
if (is_array($value)) $sums[] = array_sum($value);
}
echo array_sum($sums);

PHP:

 

$sums = array();					 
					 foreach ($_SESSION['cartSizes'] as $key => $value){
					 
					 if (is_array($value)) 
					 {					 
					 	$sums[] = array_sum($value);
					 }
					 	$totItems = array_sum($sums);
					 	
					 	echo $totItems;
					 			   
					 }

Code (markup):

this seems to work ok. you just missed an open brace bracket for the if statement. thanks!

 

There wasn't one. My IF statement was a one liner, therefore I ignored that brace. Plus, the code was for guide and example over all else.

A Reputation would be appreciated

Thanks,

Jay