Get Option Value by Id of Attribute in Magento

Question

How can Magento find an attribute value by a given attribute label or a given attribute id?

Answer 1

$productModel = Mage::getModel('catalog/product');
$str_attr_label = "color";  //or "size", etc...
$int_attr_id = 8; // or any given id.
$int_attr_value = 21; // or any given attribute value id.

// Chose either
if ($byLabel){
    $attr = $productModel->getResource()->getAttribute($str_attr_label);
}
if ($byId){
    $attr = Mage::getModel('catalog/resource_eav_attribute')->load($int_attr_id);
}

if ($attr->usesSource()) {
    echo $color_label = $attr->getSource()->getOptionText($int_attr_value);
}       

Answer 2

Simply put - use the getAttributeText method.

$product->getAttributeText('brand')

Answer 3

In case anyone finds this page and wants some down low methods of looking up attributes of any kind, instead of just product attributes, here is an example to look up a random attribute I created that is called 'specialty' and list all the options as an array.

$attr = Mage::getResourceModel('eav/entity_attribute_collection')->setCodeFilter('specialty')->getData()[0];
$attributeModel = Mage::getModel('eav/entity_attribute')->load($attr['attribute_id']);
$src =  $attributeModel->getSource()->getAllOptions();