Philippine nationality law
The Philippine nationality law is based upon the principles of jus sanguinis (Latin: right of blood) and therefore descent from a parent who is a citizen or national of the Republic of the Philippines is the primary method of acquiring Philippine citizenship. This is contrasted with the legal principle of jus soli where being born on the soil of a country, even to foreign parents, grants one citizenship. For those born in the Philippines to non-Filipino parents, the Administrative Naturalization Law of 2000 (R.A. 9139) provides a path for administrative naturalization for those who qualify.
Citizenship by birth
As of 2010, with no significant changes expected, Philippine nationality law provides that a person becomes a Philippine citizen by birth if
that person was born on or after October 15, 1986 and at least one parent was a Philippine citizen on the birthdate;
that person was born on or after January 17, 1973 and both parents were Philippine citizens on the birthdate or the person elected Philippine citizenship pursuant to the provisions of the 1935 Constitution;