Validating a Form - How to set values on Dropdown Boxes?

[eluser]Sinclair[/eluser]
Great!

It is working now. I have used the checkdate function. For example if I input 29 February of 1982 give me false.

Code:

$valor = checkdate($this->input->post('month'),
                   $this->input->post('day'),
           $this->input->post('year'));