final_price_variables_controller.php

<?php

class masked_name__Adminhtml_masked_name__Controller extends Mage_Adminhtml_Controller_Action
{
	public function indexAction()
	{
		$this->loadLayout()->renderLayout();
	}

	public function postAction()
	{
		$post = $this->getRequest()->getPost();
		try {
			if (empty($post)) {
				Mage::throwException($this->__('Invalid form data.'));
			}

			/* form processing */
			Mage::app()->getRequest()->getPost();
			$masked_value_1 = Mage::app()->getRequest()->getParam('masked_value_1');
			$masked_value_2 = Mage::app()->getRequest()->getParam('masked_value_2');
			$masked_value_3 = Mage::app()->getRequest()->getParam('masked_value_3');

			$conn = Mage::getSingleton('core/resource')->getConnection('core_write');
			$conn->query("UPDATE masked_table_name SET masked_input_1='" . $masked_value_1 . "', masked_input_2='" . $masked_value_2 . "', masked_input_3='" . $masked_value_3 . "' WHERE id='10'");

			$message = $this->__('Landed price variable have been successfully updated.');
			Mage::getSingleton('adminhtml/session')->addSuccess($message);
		} catch (Exception $e) {
			Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
		}
		$this->_redirect('*/*');
	}
}