forgot to add
reset($sessarray);
before each of the while() loops
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Arrays -bit confused
ok, Arrays
for some reason arrays have always got the better of me so I normally come up with away around using them. Unfortunatley I am up against a problem and the only solution I can see is to use an array.
So
I need to keep a seperate track of products and categories that a shopper has in their cart.
I need to use a session variable to do it.
and, because I have no idea how many products or categories there will be, I need to use an array.
can I have something like
$_SESSION['cat_check'] = array(); ?
each part of the array has an ID number (i assume), the category id then the product id?
can I check for the existance of a product id (how) if its not there how do I add the category id and product id to the end of the array?
also what I want is a product id once but that may lead to a category id being in more than once - can I check how many times a category id is in there?
If it needs more points then I'm happy to sort that.
Just to clarify, I don't want to/can't use a database table so please don't suggest that as a possible solution :)
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Answers
TheClickMaster's solution is what you want. A couple of things:
instead of array_push, you can use:
$sessarray[] = $item
You don't have the overhead of calling a function
(ref: http://us3.php.net/manual/
Also, you can use the in_array function to do some basic searching.
$product = 'AX111';
$found = in_array($product,$sessarr
The online PHP manual is one of the greatest resources for PHP out there.
http://www.php.net/manual/
Take the time to learn arrays. Once you do, you'll always be looking for ways to use them in the problems you face.
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by: TheClickMasterPosted on 2005-10-12 at 09:43:25ID: 15070529
// reference to $session['cat_check'], saves some typing
$sessarray = &$session['cat_check'];
// for each item you want to add create an array with the cat Id and prod Id
$item = array("category","producti
// add items to the session
array_push($sessarray, $item);
// check if a product id exists
$product = 'AX111';
$found = false;
while((list(, $item) = each($sessarray)) && $found != true)
{
// $item[0] is the category, $item[1] is the product id
if($item[1] == $product)
{
$found = true;
}
}
// count the number of times a category is there
$category = 'CAT1';
$found = 0; // $found contains the # of times the category was found
while(list(, $item) = each($sessarray))
{
// $item[0] is the category, $item[1] is the product id
if($item[0] == $category)
{
$found += 1;
}
}