Suppressing full pattern match in regex (preg_match())

问题

The returned matches array contains as the first element the entire string matched, followed by the captured groups.

I can't locate an option on php.net to just return the captured groups?

Is there one?

回答1:

No, it is standard for 0 to contain the entire matched string.

If it were of a concern, you could always unset($matches[0]) (which won't affect the keys) or array_slice($matches, 1).

来源：https://stackoverflow.com/questions/7949436/suppressing-full-pattern-match-in-regex-preg-match