Adding attribute options programmatically are not available for use immediately - magento

Question

I'm creating Magento attribute options via a script, but I need to then be able to get the new ID and use it straight away in the same script.
At the moment it's not pulling the id through - if I kill the script and re-start it it picks up the created option and returns the ID, but not as part of the same script.
Here is the code I am using:
$attr = Mage::getModel('catalog/product')->getResource()->getAttribute($key);
if ($attr->usesSource()) {
$vattr_id = $attr->getSource()->getOptionId($value);
}else{
echo "No Source";
$vattr_id = false;
}
if($vattr_id){
return $vattr_id;
}else{
$attr_model = Mage::getModel('catalog/resource_eav_attribute');
$attr = $attr_model->loadByCode('catalog_product', $key);
$attr_id = $attr->getAttributeId();
$option['attribute_id'] = $attr_id;
$option['value'][$value][0] = $value;
$option['value'][$value][1] = $value;
$setup = new Mage_Eav_Model_Entity_Setup('core_setup');
$setup->addAttributeOption($option);
$attr = Mage::getModel('catalog/product')->getResource()->getAttribute($key);
if ($attr->usesSource()) {
$vattr_id = $attr->getSource()->getOptionId($value);
echo "AttrID: $vattr_id";
}
}
Running this (with the required Mage::app() etc), creates the option, you can see it in the Magento back end, but the $vattr_id is NULL. If I reload the script, then it finds the attribute option in that first block as it should.
I guess it's something to do with how Magento is caching the models, but not sure where I need to look to clear these?

Answer 1

function getAttributeOptionId($attributeName, $attributeValue) {
/* #var $attribute Mage_Eav_Model_Entity_Attribute */
$attribute = Mage::getModel("eav/entity_attribute")->loadByCode("catalog_product", $attributeName);
// checking attribute code
if ($attribute->getId()) {
$source = $attribute->getSource();
$options = $source->getAllOptions();
// looking for existing id
foreach ($options as $optionValue) {
if ($attributeValue == $optionValue["label"]) {
return $optionValue["value"];
}
}
// making new option
$addOptionData = array(
"attribute_id" => $attribute->getId(),
"value" => array(array($attributeValue))
);
$setup = new Mage_Eav_Model_Entity_Setup('core_setup');
$setup->addAttributeOption($addOptionData);
// getting new id
$attribute = Mage::getModel("eav/entity_attribute")->loadByCode("catalog_product", $attributeName);
$source = $attribute->getSource();
$options = $source->getAllOptions();
foreach ($options as $optionValue) {
if ($attributeValue == $optionValue["label"]) {
return $optionValue["value"];
}
}
}
return null;
}
echo getAttributeOptionId("brand", "Intel");