What is this weird spider?
It looks like a species from the Arachnid order Amblypygi (Tail-less whip scorpions), which are closely related to Thelyphonida (Whip Scorpions). As part of Arachnids, both of these taxa are related to spiders and scorpions, but belong to a separate order. 

Even if they look scary, they are harmless to humans, even if they can sometimes bite.

According to this checklist/site only three species are listed from the Philippines, so if you want to determine it more closely, it might be useful to start from this list. The list includes: Sarax brachydactylus, Phrynus grayi and Charon grayi.

Here is an example picture (from wikipedia):


Charon grayi (giant whip-spider) from biotagua.org: