I'm not sure where you got your information (or conviction?) but mine is from the 8th Congress of the Philippines and here's a repost of the copy of the law
PHILIPPINE LAWS, STATUTES AND CODES - CHAN ROBLES VIRTUAL LAW LIBRARY
FILIPINO is the Philippine's National Language
REPUBLIC ACT NO. 7104
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Sec. 2. Declaration of Policy. — Pursuant to the mandate of the Constitution, it is hereby declared to be a policy, of the Government to ensure and promote the evolution, development and further enrichment of
Filipino as the national language of the Philippines, on the basis of existing Philippine and other languages. To this end, the Government shall take the necessary steps to carry out the said policy.
Sec. 3. Definition of Terms. — As used in this Act, the following terms and defined as follows:
(a) Commission — refers to the Commission on the Filipino Language.
(b) Chairman — refers to the Chairman of the Commission
(c) Filipino — refers to the national language of the Philippines.
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