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5 changes: 5 additions & 0 deletions src/PhoneNumberUtil.php
Original file line number Diff line number Diff line change
Expand Up @@ -879,6 +879,11 @@ protected function isValidRegionCode(?string $regionCode): bool
public function getRegionCodeForNumber(PhoneNumber $number): ?string
{
$countryCode = $number->getCountryCode();

if ($countryCode === null) {
return null;
}

if (!isset($this->countryCallingCodeToRegionCodeMap[$countryCode])) {
return null;
}
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4 changes: 4 additions & 0 deletions tests/core/PhoneNumberUtilTest.php
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,7 @@ class PhoneNumberUtilTest extends TestCase
private static PhoneNumber $aeUAN;
private static PhoneNumber $unknownCountryCodeNoRawInput;
protected PhoneNumberUtil $phoneUtil;
private static PhoneNumber $notAPhoneNumber;

public function setUp(): void
{
Expand Down Expand Up @@ -142,6 +143,7 @@ private static function initializePhoneUtilForTesting(): PhoneNumberUtil
self::$aeUAN->setCountryCode(971)->setNationalNumber('600123456');
self::$unknownCountryCodeNoRawInput = new PhoneNumber();
self::$unknownCountryCodeNoRawInput->setCountryCode(2)->setNationalNumber('12345');
self::$notAPhoneNumber = (new PhoneNumber())->setNationalNumber('not-a-phone-number');

PhoneNumberUtil::resetInstance();
return PhoneNumberUtil::getInstance(
Expand Down Expand Up @@ -1775,6 +1777,8 @@ public function testGetRegionCodeForNumber(): void
self::assertEquals(RegionCode::GB, $this->phoneUtil->getRegionCodeForNumber(self::$gbMobile));
self::assertEquals(RegionCode::UN001, $this->phoneUtil->getRegionCodeForNumber(self::$internationalTollFree));
self::assertEquals(RegionCode::UN001, $this->phoneUtil->getRegionCodeForNumber(self::$universalPremiumRate));
self::assertEquals(null, $this->phoneUtil->getRegionCodeForNumber(self::$notAPhoneNumber));

}

public function testGetRegionCodesForCountryCode(): void
Expand Down
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