ZF2-331: Digits Validator append %value% to an empty string error message


In Zend\Validator\Digits the following error return on empty string:

self::STRING_EMPTY => "'%value%' is an empty string",

I think the %value% should not be displayd as it actualy empty. The result is a string with two quotes at the start:

'' is an empty string


This PR changes that template…

Patch is merged