PHP Function to check whether a given date is valid or not.

Here is a Simple Function to check whether a given date is valid or not.

           function is_valid_date($value, $separator='-')

{

              if(strlen($value) <= 10)

                        {

                        // check date

                        $arr=explode($separator,$value);

                        $day=$arr[2];

                        $month=$arr[1];

                        $year=$arr[0];

                        if(@checkdate($month, $day, $year))

                                    return true;

              }

             return false;

}