(PECL gender >= 0.6.0)
Gender\Gender::IS_FEMALEGender\Gender::IS_MOSTLY_FEMALEGender\Gender::IS_MALEGender\Gender::IS_MOSTLY_MALEGender\Gender::IS_UNISEX_NAMEGender\Gender::IS_A_COUPLEGender\Gender::NAME_NOT_FOUNDGender\Gender::ERROR_IN_NAMEGender\Gender::ANY_COUNTRYGender\Gender::BRITAINGender\Gender::IRELANDGender\Gender::USAGender\Gender::SPAINGender\Gender::PORTUGALGender\Gender::ITALYGender\Gender::MALTAGender\Gender::FRANCEGender\Gender::BELGIUMGender\Gender::LUXEMBOURGGender\Gender::NETHERLANDSGender\Gender::GERMANYGender\Gender::EAST_FRISIAGender\Gender::AUSTRIAGender\Gender::SWISSGender\Gender::ICELANDGender\Gender::DENMARKGender\Gender::NORWAYGender\Gender::SWEDENGender\Gender::FINLANDGender\Gender::ESTONIAGender\Gender::LATVIAGender\Gender::LITHUANIAGender\Gender::POLANDGender\Gender::CZECH_REPGender\Gender::SLOVAKIAGender\Gender::HUNGARYGender\Gender::ROMANIAGender\Gender::BULGARIAGender\Gender::BOSNIAGender\Gender::CROATIAGender\Gender::KOSOVOGender\Gender::MACEDONIAGender\Gender::MONTENEGROGender\Gender::SERBIAGender\Gender::SLOVENIAGender\Gender::ALBANIAGender\Gender::GREECEGender\Gender::RUSSIAGender\Gender::BELARUSGender\Gender::MOLDOVAGender\Gender::UKRAINEGender\Gender::ARMENIAGender\Gender::AZERBAIJANGender\Gender::GEORGIAGender\Gender::KAZAKH_UZBEKGender\Gender::TURKEYGender\Gender::ARABIAGender\Gender::ISRAELGender\Gender::CHINAGender\Gender::INDIAGender\Gender::JAPANGender\Gender::KOREA