src/PhoneNumberUtil.php
public function isMobileNumberPortableRegion($regionCode)
    {
        $metadata = $this->getMetadataForRegion($regionCode);
        if ($metadata === null) {
            return false;
        }

        return $metadata->isMobileNumberPortableRegion();
    }
public function isMobileNumberPortableRegion($regionCode)
    {
        $metadata = $this->getMetadataForRegion($regionCode);
        if ($metadata === null) {
            return false;
        }

        return $metadata->isMobileNumberPortableRegion();
    }
public function isMobileNumberPortableRegion ( $ regionCode ) { $ metadata = $ this -> getMetadataForRegion ( $ regionCode ) ; if ( $ metadata === null ) { return false ; } return $ metadata -> isMobileNumberPortableRegion ( ) ; }
Returns true if the supplied region supports mobile number portability. Returns false for
invalid, unknown or regions that don't support mobile number portability.

@param string $regionCode the region for which we want to know whether it supports mobile number
portability or not.
@return bool
Returns true if the supplied region supports mobile number portability . Returns false for invalid unknown or regions that don t support mobile number portability .