Compatibility summary
Your Philippines plug may fit in South Korea outlets, as both use at least one common plug type.
Plug comparison
Philippines plug types: A B C
South Korea plug types: C F
Both countries share at least one plug type (A B C and C F), so some plugs may work without an adapter. Check your appliance.
Voltage comparison
Philippines: 220V, 60Hz
South Korea: 220V, 60Hz
Voltage difference is within a range many devices tolerate; check your appliance label.