src/Chippyash/Validation/Common/ISO8601/MatchDate.php
public function matchZone($zone)
    {
        return $this->matchPart(
            $zone,
            $this->formatRegex[$this->format][self::STRZONE]
        );
    }
public function matchZone($zone)
    {
        return $this->matchPart(
            $zone,
            $this->formatRegex[$this->format][self::STRZONE]
        );
    }
public function matchZone ( $ zone ) { return $ this -> matchPart ( $ zone , $ this -> formatRegex [ $ this -> format ] [ self :: STRZONE ] ) ; }
Match a zone part

@param  string $zone
@return boolean
Match a zone part