The Magento Strikes Back

/**
 * Function to create attributes
 *
 * @param string $code - seo safe URL string
 * @param string $label - nice label for the backend
 * @param string $attribute_type - textbox/select etc
 * @param array $product_type - what product types should this attribute be available to? simple/grouped etc
 * @return none
 */
private function createAttribute($code, $label, $attribute_type, $product_type)
{		
 
	// attribute data
	$_attribute_data = array(
		'attribute_code' => $code,
		'is_global' => '1',
		'frontend_input' => $attribute_type,
		'default_value_text' => '',
		'default_value_yesno' => '0',
		'default_value_date' => '',
		'default_value_textarea' => '',
		'is_unique' => '0',
		'is_required' => '0',
		'apply_to' => $product_type,
		'is_configurable' => '0',
		'is_searchable' => '0',
		'is_visible_in_advanced_search' => '0',
		'is_comparable' => '0',
		'is_used_for_price_rules' => '0',
		'is_wysiwyg_enabled' => '0',
		'is_html_allowed_on_front' => '1',
		'is_visible_on_front' => '0',
		'used_in_product_listing' => '0',
		'used_for_sort_by' => '0',
		'is_filterable_in_search' => '0',
		'is_filterable' => '0',
		'frontend_label' => array($label)
	);
 
	// grab the Magento model for attributes
	$model = Mage::getModel('catalog/resource_eav_attribute');
 
	if (is_null($model->getIsUserDefined()) || $model->getIsUserDefined() != 0) {
		$_attribute_data['backend_type'] = $model->getBackendTypeByInput($_attribute_data['frontend_input']);
	}
 
	// add data to the attribute from the array above
	$model->addData($_attribute_data);
 
	// set type
	$model->setEntityTypeId(Mage::getModel('eav/entity')->setType('catalog_product')->getTypeId());
 
	// set user defined
	$model->setIsUserDefined(1);
 
	try {
		$model->save(); echo '<p>Saved: ' . $label . '</p>';
	}
	catch (Exception $e) {
		echo '<p>Sorry, error occured while trying to save the attribute "' . $label . '" Error: '.$e->getMessage().'</p>';
	}
}