Problem with getID() in magento

Question

here is my code.. when i am using getData() , it will give whole array..

 $model = Mage::getModel('warranty/warranty');

                    $war = $model->getCollection()
                                    ->addFieldToSelect('*')
                                    ->addFieldToFilter('product_id',  array('eq' => $productId))
                                    ->load();

echo'<pre>';print_r($war->getData()); die;

output:

Array
(
    [0] => Array
        (
            [id] => 9
            [product_id] => 554
            [warranty_period] => 2 month
            [price_in_warranty] => 500
            [price_out_warranty] => 24
        )

)

but when i try to get id using

echo $war->getId(); die;

nothing will display. how to get id through above array?

Answer 1

As you're dealing with a collection, you can't simply call:

$war->getId();

If you want the id of the first item of your collection you can call:

$war->getFirstItem()->getId();

If you want to get the ids of every items in your collection you can do:

foreach ($war as $item)
{
    echo $item->getId();
}

Answer 2

I think what you really wanted is this:

$war[0]->getId();

Because from your var dump, you can see that $war is a collection.

Of course, you can iterate through $war if you have multiple items in it.