libphonenumber\ShortNumberInfo::isValidShortNumber PHP Méthode

    public function isValidShortNumber(PhoneNumber $number)
    {
        $regionCodes = $this->getRegionCodesForCountryCode($number->getCountryCode());
        $regionCode = $this->getRegionCodeForShortNumberFromRegionList($number, $regionCodes);
        if (count($regionCodes) > 1 && $regionCode !== null) {
            // If a matching region had been found for the phone number from among two or more regions,
            // then we have already implicitly verified its validity for that region.
            return true;
        }
        return $this->isValidShortNumberForRegion($number, $regionCode);
    }

    /**
     * @dataProvider shortNumberRegionList
     */
    public function testShortNumbersValidAndCorrectCost($regionCode)
    {
        $exampleShortNumber = $this->shortNumberInfo->getExampleShortNumber($regionCode);
        if (!$this->shortNumberInfo->isValidShortNumberForRegion(
            $this->phoneNumberUtil->parse($exampleShortNumber, $regionCode),
            $regionCode
        )
        ) {
            $this->fail(
                "Failed validation for string region_code: {$regionCode}, national_number: {$exampleShortNumber}"
            );
        }
        $phoneNumber = $this->phoneNumberUtil->parse($exampleShortNumber, $regionCode);
        if (!$this->shortNumberInfo->isValidShortNumber($phoneNumber)) {
            $this->fail("Failed validation for " . (string)$phoneNumber);
        }

        $costArray = array(
            ShortNumberCost::PREMIUM_RATE,
            ShortNumberCost::STANDARD_RATE,
            ShortNumberCost::TOLL_FREE,
            ShortNumberCost::UNKNOWN_COST
        );

        foreach ($costArray as $cost) {
            $exampleShortNumber = $this->shortNumberInfo->getExampleShortNumberForCost($regionCode, $cost);
            if ($exampleShortNumber != '') {
                $this->assertEquals(
                    $cost,
                    $this->shortNumberInfo->getExpectedCostForRegion($this->phoneNumberUtil->parse($exampleShortNumber, $regionCode), $regionCode),
                    "Wrong cost for " . (string)$phoneNumber
                );
            }
        }
    }