Generation error

If I create a small library function to check for a valid date then generating process always gives me an error:

Undefined offset: 4 | Script: C:\Program Files (x86)\NetMake\v71\wwwroot\scriptcase\devel\class\generator
mDados.class.php linha: 6734

This is the library function


function validateDateDMY($mydate)
{
   if (preg_match('/^(\d{2})-(\d{2})-(\d{4})$/', $mydate, $datebit)) {
      return checkdate($datebit[1] , $datebit[3] , $datebit[2]);
   } else {
      return false;
   }

}

Hello,

Issue reported to our bugs team.

regards,
Bernhard Bernsmann