callback validation help

[eluser]danmontgomery[/eluser]
I believe callback functions for form_validation can only accept one parameter, which is the value of the field being validated. You would probably be passing it a string in the format of m/d/Y, or something similar.

Code:

function date_exists($date)
{
  $timestamp = strtotime($date);
  return checkdate(date('m', $timestamp), date('d', $timestamp), date('Y', $timestamp);
}

then:

Code:

$this->form_validation->set_rules('start_date', 'Start Date', 'callback_date_exists');
$this->form_validation->set_rules('end_date', 'End Date', 'callback_date_exists');