Change your variable style between [ Camel Style, Php Style, Constant Style, Pascal Style, Kebab Style and so on... ]
shift + alt + q => Camel, e.g. itIsAwesome
shift + alt + w => Php Style, e.g. it_is_awesome
shift + alt + e => Constant Style, e.g. IT_IS_AWESOME
shift + alt + r => Pascal Style, e.g. ItIsAwesome
shift + alt + t => Kebab Style, e.g. it-is-awesome