See - 193707.pdf
"x x x.
Additionally, prohibitive laws concerning persons, their acts or property, and those which have for their object public order, public policy and good customs shall not be rendered ineffective by laws or judgments promulgated, or by determinations or conventions agreed upon in a foreign country.
The public policy sought to be protected in the instant case is the principle imbedded in our jurisdiction proscribing the splitting up of a single cause of action.
x x x.
Moreover, foreign law should not be applied when its application would work undeniable injustice to the citizens or residents of the forum. To give justice is the most important function of law; hence, a law, or judgment or contract that is obviously unjust negates the fundamental principles of Conflict of Laws.48
Applying the foregoing, even if the laws of the Netherlands neither enforce a parent’s obligation to support his child nor penalize the noncompliance therewith, such obligation is still duly enforceable in the Philippines because it would be of great injustice to the child to be denied of financial support when the latter is entitled thereto.
x x x."
