Philippine Airlines Tickets I'll Buy Tickets To HK From Philippine Airlines (I'm From The Phil), What Other Taxes Or Payments Must I Pay?

I'll buy tickets to HK from Philippine Airlines (I'm from the Phil), what other taxes or payments must I pay? - philippine airlines tickets

It is said that the total (input) including all taxes, except taxes Philippines Travel, other expenses and fees are collected at the airport. What exactly are the fees at the airport, where Phil and I pay? I walk through the airport NAIA Centennial Terminal 2 I'm sorry if I'm confused, is the first time they fly abroad. :)