如何在非字母/非破折号上preg_split（）？

Question

I need to split on characters that are neither \p{L} nor the -. I am a bit confused. \P{L}|[^-] will obviously not work as everything will match [^-]. I do not know how to put a Unicode class inside []. Lookahead / lookbehind will latch on the previous / following character.

In other words, I need to split foo-bar;dásh into ['foo-bar', 'dásh'].

Answer 1

Just use one negated character class for both:

$res = preg_split('/[^\pL-]+/u', $str);

This will split on + one or more characters that are neither an unicode letter \pL nor a dash -

See test at regex101, eval.in