如何用中文获得preg_match 2位数点（可选）？ [重复]

Question

This question already has an answer here:

• What do ^ and $ mean in a regular expression? 2 answers

I tried to find out preg_match for Chinese character. I can get Chinese character in some way like this

preg_match("/^\p{Han}+/u", $message); //$message = '你好';

But, sometime two digit number with . in front something like this

$message = '01. 你好' //or '21. 你好'

So, my preg_match condition is not correct in this message. How do I check this optional two digit with dot?

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Answer 1

Try /\p{Han}+/gu like:

preg_match("/\p{Han}+/u", $message,$result);

or

preg_match_all("/\p{Han}+/u", $message,$result);