$countryCode = "US"; $countryName = CRM_Core_PseudoConstant::getLabel("CRM_Core_DAO_Country", $countryCode); echo "The name of the country with code $countryCode is $countryName";In this example, we are using the `getLabel()` method of the CRM_Core_PseudoConstant class to retrieve the name of a country by its ISO code. Package library: CiviCRM.