Unless your Girlfriend has zillions in the bank and property in the Philippines, ie a reason or two to return at the end of the trip, she doesn't stand a chance of getting a Tourist Visa.
A lot of members will suggest for you to go there first, once or twice, to meet her, gather enough evidence and then apply for a Fiancee Visa.
If you use the search facility, you will find several, if not hundreds of posts relating to the same situation as yours.
Welcome aboard and....
Good luck