Adding existing attribute to all attribute sets

Question

I have an existing attribute for an embed code. I need to associate this attribute with 120+ existing attribute sets.

If I know the attribute set id, ho

Answer 1

$attributeSets = Mage::getResourceModel('eav/entity_attribute_set_collection')
    ->setEntityTypeFilter('4'); // Catalog Product Entity Type ID
foreach ($attributeSets as $attributeSet) {
    $installer->addAttributeToSet(
        Mage_Catalog_Model_Product::ENTITY,   // Entity type
        $attributeSet->getAttributeSetName(), // Attribute set name
        'General',                            // Attribute set group name
        $yourAttributeCode,
        100                                   // Position on the attribute set group
    );
}