I have a question about Philippines?

Hi.. I'm Australian and I'm in the Philippines and I'd like to ask. Why is it that the Filipino's look so diverse, I mean if you've been here you know what I mean. Some look like Mexican,Indonesian some are chinky... and I was in Zamboaga the other day and I saw some girls with brown hair and brown eyes, I mean they look European.. I'm confused lol . I thought they look like Indonesian or Malaysian or somthing lol just curious ahahahhaha