Wrong datatype for second argument in ca

[Anon]

i got this error when i'm using;

if(in_array($product_id, $cart))
{
$quantity[$oroduct_id] +=1;
}

can someone plz help me out, and plz email me any solution
Thanks guy!
my email: [e-mail]

[van__]

$cart is not an array.
So go back in there and fix it 😉

$cart = array();
..is a pretty simple fix.