The {@link PhoneNumberToCarrierMapper} is implemented as a singleton. Therefore, calling * this method multiple times will only result in one instance being created. * * @param string $mappingDir * @return PhoneNumberToCarrierMapper */ public static function getInstance($mappingDir = self::MAPPING_DATA_DIRECTORY) { if (!array_key_exists($mappingDir, static::$instance)) { static::$instance[$mappingDir] = new static($mappingDir); } return static::$instance[$mappingDir]; } /** * Returns a carrier name for the given phone number, in the language provided. The carrier name * is the one the number was originally allocated to, however if the country supports mobile * number portability the number might not belong to the returned carrier anymore. If no mapping * is found an empty string is returned. * *

This method assumes the validity of the number passed in has already been checked, and that * the number is suitable for carrier lookup. We consider mobile and pager numbers possible * candidates for carrier lookup. * * @param PhoneNumber $number a valid phone number for which we want to get a carrier name * @param string $languageCode the language code in which the name should be written * @return string a carrier name for the given phone number */ public function getNameForValidNumber(PhoneNumber $number, $languageCode) { $languageStr = Locale::getPrimaryLanguage($languageCode); $scriptStr = ''; $regionStr = Locale::getRegion($languageCode); return $this->prefixFileReader->getDescriptionForNumber($number, $languageStr, $scriptStr, $regionStr); } /** * Gets the name of the carrier for the given phone number, in the language provided. As per * {@link #getNameForValidNumber(PhoneNumber, Locale)} but explicitly checks the validity of * the number passed in. * * @param PhoneNumber $number The phone number for which we want to get a carrier name * @param string $languageCode Language code for which the description should be written * @return string a carrier name for the given phone number, or empty string if the number passed in is * invalid */ public function getNameForNumber(PhoneNumber $number, $languageCode) { $numberType = $this->phoneUtil->getNumberType($number); if ($this->isMobile($numberType)) { return $this->getNameForValidNumber($number, $languageCode); } return ''; } /** * Gets the name of the carrier for the given phone number only when it is 'safe' to display to * users. A carrier name is considered safe if the number is valid and for a region that doesn't * support * {@linkplain http://en.wikipedia.org/wiki/Mobile_number_portability mobile number portability}. * * @param $number PhoneNumber the phone number for which we want to get a carrier name * @param $languageCode String the language code in which the name should be written * @return string a carrier name that is safe to display to users, or the empty string */ public function getSafeDisplayName(PhoneNumber $number, $languageCode) { if ($this->phoneUtil->isMobileNumberPortableRegion($this->phoneUtil->getRegionCodeForNumber($number))) { return ''; } return $this->getNameForNumber($number, $languageCode); } /** * Checks if the supplied number type supports carrier lookup. * @param int $numberType A PhoneNumberType int * @return bool */ protected function isMobile($numberType) { return ($numberType === PhoneNumberType::MOBILE || $numberType === PhoneNumberType::FIXED_LINE_OR_MOBILE || $numberType === PhoneNumberType::PAGER ); } }