Ship via USPS using Registered Mail. Multiple filipinos have mentioned that's the way to go when shipping to the Philippines.
Just about everything else is subject to being opened up, and valuable articles are kept (i.e. "stolen") by local postal workers there. Second choice is Express Mail, but Registered Mail is the most secure shipping method. The postal system there is horrible. One filipino woman sent a package to United States, and two months later it was still in the samemailing office she dropped it off. We found out because I asked the sender to inquire for the missing package, and they admitted it was still to being processed. A month later, I received the package.
I hope this helps.