How to sort products into categories Magento

Question

I have toons of products in a magento store thats need to be sorted into new categories based on diffrent attributes any one knows how to do this with a script.

example:

if the product attribute "COLOR" has a value of Blue the product should be in cat 10 and so on

Answer 1

Once you iterate over your products you can use the setCategoryIds method (this code is meant to be used for a dropdown attribute as it uses the getAttributeTextMethod):

$product->load($productId);
if( strcmp($product->getAttributeText('COLOR') , 'Blue') == 0 ){
    $product->setCategoryIds(array('cat1Id' ,'cat2Id'));
}
$product->save();