Callback function 

Hi, i use this code
$validator
            ->required('You must supply telephone.')
            ->callback(function($val) {
                return (preg_match('/^[0-9]{1,}$/', $val, $matches) === FALSE) ? false : true;
              }, "Must be a Number")
            ->validate('telephone', 'Telephone');

To validate telephone number, but if field is invalid return this resulset:
[validData:protected] => Array
        (
            [telephone] => SAsa
        )
as valid data. Can you help me? Thanks!