I have a string as below:

53 12/Feb/2022 11:12:08 POST https 200 [1044ms]

I want to get the number in the text [xxxms] -> 1044

I use regex \d ms, the result is 1044ms, but I want to get only the number.

Please help me with this issue.

CodePudding user response：

If your regex engine/tool support lookarounds, you could use:

(?<=\[)\d (?=\w \])

Demo

CodePudding user response：

You can get the value without lookarounds using a capture group:

\[(\d )ms]

• \[ Match [
• (\d ) Capture 1 digits in group 1
• ms] match literally

Regex demo