php - 如何从以减号开头的字符串中删除所有单词？

Question

我试过这个，但它似乎只适用于字母数字字符？

\ba\w*\b  <- works
\b-\w*\b  <- doesn't work

如何从以连字符开头的字符串中删除所有单词？

Answer 1

preg_replace("/-\w+/", "", "-000 aaa -bbb ccc -ddd -eee")

gives: aaa ccc

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EDITED 3 times: As noticed in the comments - be it a stretch of the original question or not - all the suggested variants didn't work with -xx-yy-zz or qq-ww-ee, or -äüö. This one :

preg_replace("/(\s?)(?<=\s|^)(-)\S*\s*/", "$1", "-000 aaa -bbb ccc -ddd -eee-eee-eee -äüö fff-qqq-rrr äüö2 äüö-äüö-3 -ggg");

... produced the following:

 aaa ccc fff-qqq-rrr äüö2 äüö-äüö-3

Limitations apply: accented characters are acceptable; multibyte ones would certainly be a stretch.