KSA version is openline for Philippines or no

You can check it for yourself. Go here→https://www.apple.com/iphone/cellular/#iphone-13-mini and compare the channels for Saudi Arabia and Philippines models.

I chose the iPhone 13/13 mini as an example, but if you were thinking of a different model they are all listed.

Yes, any iPhone will work anywhere in the world, although it may not support all channels.

What do you mean by “openline”?