How do i unlock a philips dvd player?

If you mean to play dvd's that you may have purchased in another country the see below

For that you need to do a google for "mymodel region free" or "region free hack"

Not all dvd players are capable of this often very simple modification (usually just involves the remote control and a combination of keys)

Your search will turn up a lot of sharks that want money for the hack

IGNORE THEM

There are a lot of sites where the information is free.

I am unsure of FIXYA's policy on this topic and am awaiting further clarification on the issue with regards to handing out these codes.
I would prefer not to get my @ss kicked. That is why I gave you the search terms rather than site links