array( self::STANDARD => '{{name}} must contain only letters (a-z) and digits (0-9)', self::EXTRA => '{{name}} must contain only letters (a-z), digits (0-9) and "{{additionalChars}}"', ), self::MODE_NEGATIVE => array( self::STANDARD => '{{name}} must not contain letters (a-z) or digits (0-9)', self::EXTRA => '{{name}} must not contain letters (a-z), digits (0-9) or "{{additionalChars}}"', ), ); }