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

Just to mention for everyone looking into this thread..

$this->getRequest()->getParams('value_here');

is just wrong... The only available method to retrieve a special param with or without default value is without s

$this->getRequest()->getParam('param','defaultValue');

All other comments are just wrong