Retrieve multiselect values for all products

Question

I need to retrieve all values of some multiselect attributes that each of my products have. I found related posts but none of them seems to solve my problem.

For example I found the code

echo $_product->getResource()->getAttribute('car_options')->getFrontend()->getValue($_product);

But I don't know where should I get $_product from. I guess it's a simple task, but I am pretty new to Magento and I'm still discovering how it works.

I am using Magento 1.7. Any help is much appreciated :-)

Answer 1

You can use below code,

<?php 
$productMultiSelectData = array();
$collection = Mage::getModel('catalog/product')->getCollection()
    ->addAttributeToSelect("*");
foreach($collection as $_product){
    $productMultiSelectData[$_product->getId()] = $_product->getResource()->getAttribute('car_options')->getFrontend()->getValue($_product);
}
echo "<pre>";
print_r($productMultiSelectData);

It will give you output like this, here key is product Id and value is your attribute option data.

[1] => 'Option 1, Option2',
[2] => 'Option 1, Option2, Option3',
[3] => 'Option 1, Option5',
[4] => 'Option 3, Option6'