* Tagalog (the national language): "Magandang araw" (pronounced mah-gan-dang ah-raw) - This is a formal greeting, meaning "good day."
* Tagalog (informal): "Kumusta" (pronounced koo-moost-ah) - This is a more casual greeting, similar to "how are you?"
* Cebuano: "Maayong adlaw" (pronounced mah-yo-ong ad-law) - This also means "good day."
* Ilocano: "Naimbag nga aldaw" (pronounced nay-im-bag nga al-daw) - Another way to say "good day."
You could also use "Hello" which is widely understood in the Philippines, especially in urban areas.