PHP: Check alphabetic characters from any latin-based language?

How about this regex:

^\p{Latin}+$

Working regex example:

https://regex101.com/r/I5b2mC/1

This might work

 [^\P{latin}\s\p{Punctuation}]

Its all latin, but not punctuation nor whitespace.
where \P means NOT this property
and \p means this property.

Put it in a negative class its

NOT, NOT Latin = Include All Latin
NOT Punctuation = Exclude Punctuation
NOT Whitespace = Exclude Whitespace