Determine if a certain product is in the cart

I want to include a message flag when certain items are in the shopping cart on tpl_shopping_cart_default.php.

The logic is basically, if the cart contains product id 142, then show some html code. I played with the Zen Cart functions, but I just couldn't figure out how to create this statement.

Do you want to hardwire it or write it as an SQL query??? Where do you want the message to appear??? On the main page, underneath the shopping cart, in its own side box????

The cart content is store in $_SESSION, you can retrieve it anywhere.
Try print_r($_SESSION) to learn the structure of the data.

Just use the built-in function:```
$_SESSION['cart']->in_cart($products_id)

DrByte:

Just use the built-in function:```
$_SESSION['cart']->in_cart($products_id)

So you can just add:

```php
  $alert_id=142;
  if($_SESSION['cart']->in_cart($alert_id))
  {
	$content.="<strong>Insert your custom HTML here for display when products_id 142 is found in your shopping cart</strong>";
  }

to your tpl_shopping_cart.php, near the end of the file, right before $content .= '</div>'; (see attached).

Why not use one of the "Cross Sell Mods" in the dl section? Then you can set up your products from the admin.

???
JOhn ><>

Sorry for the delay in responding... been having a terrible time getting it to work. It's not working with the particular product ID I'm looking for, and I'm wondering if it has anything to do with it having attributes. When I do a var_dump, I get the below.

For some reason, the product_ID is being appended with what looks like a session token (186:da00eb308c52a23d5e6d9c1ce7270e44).

object(shoppingCart)#4 (10) { ["contents"]=> array(1) { ["186:da00eb308c52a23d5e6d9c1ce7270e44"]=> array(2) { ["qty"]=> float(1) ["attributes"]=> array(2) { [18]=> string(2) "70" [2]=> string(2) "19" } } } ["total"]=> float(39.99) ["weight"]=> float(4) ["cartID"]=> string(5) "11075" ["content_type"]=> string(8) "physical" ["free_shipping_item"]=> int(0) ["free_shipping_weight"]=> int(0) ["free_shipping_price"]=> int(0) ["customers_group"]=> NULL ["observers"]=> array(0) { } }

Thanks everyone for your help with this... you've been so kind!

MyGreyGoose:

For some reason, the product_ID is being appended with what looks like a session token (186:da00eb308c52a23d5e6d9c1ce7270e44).That's not a session token. It's a unique identifier for that particular product in that particular cart with that particular combination of attributes assigned to it.

To detect just the product, strip off the colon and the hash before passing it to the function.

How do I strip off the colon and hash before passing it to the function? I've tried everything, but I don't understand how to truncate something from an array.

This is the only code I'm using:

  $alert_id=180;
    
  if($_SESSION['cart']->in_cart($alert_id))
  {
    $content .= "custom HTML here";
  }  

hmmm ... your case is backwards to how I had read it the first time round ... oops

Try in_cart_mixed() instead of in_cart()

That worked... thanks!!!