Traveling plan

We will have a 40-days holiday in this winter.It will begin at Dec.16th and end at Jan.30th.It is really a long holiday.So I plan to travel to the Philippines.I have seen many pictures of the beautiful islands in the Philippines.I really want to visit these islands.I have bought the airticket to that country.But I am worry about the visa.I know I can stay in the Philippines for 7 days with my American visa.But I want to stay for a month.So maybe I need a Philippines visa.Unfortunately I don't know how to get a Philippines visa in America.I need do a lot of works about the visa.I should get the visa before Dec.