Why is the last number missing when preg_match_all () regular expression is used to retrieve data?

Why is the last number missing when preg_match_all () regular expression is used to retrieve data? Preg_match_all ('/id = (. *) [0-9]/', 'http: // www.baidu.com/go.htm? Spm = a1z10.1. w5003-4193336463.1.aoWyoL & id = 35468681941 & scene = baidu_session ', $ id );

I want to get the id value in the URL.
In the above example, we can only get 3546868194, with 1 missing. Why?

Reply to discussion (solution)

You can write it like this. thank you.
Preg_match_all ('/id \ = (\ d + )/',

Well, I only know how to change it. I don't know why... if you only want to match a number, as long as/id = [0-9,
/Id = (. *) [0-9]/this is too messy and the connection mode unit is used ..