My advice is don't rely on ATMs in the Philippines. They are often off-line, withdrawal limits are small, there are often surcharges on international withdrawals, and there is that risk the machine might eat your card, so why bother? Just bring sufficient $US and convert what you need when you are in the Philippines. The money changers at the airport offer fairly good rates, so does the money changer at the Landmark Department store in Makati.