How to get post data variables after submition a form in magento

Question

How do I get data of post variables ? Like if I post form with post method then I can get itt with $_REQUEST or with $_POST. How I can do this in mgento ?

Answer 1

Return array with params post/get

Mage::app()->getRequest()->getParams();

Return value by field name

Mage::app()->getRequest()->getParam('field');