Limit the number of digits in regex

Question

I have such a regex:

'(?:\$|сум)(\040)?(\d+)|(\d+)(\040)?(?:\$|сум)'

It matches the following strings:

$23
23$
1000сум
сум1000
сум 1000
1000 сум

I want to limit the number of digits in this regex to 8.

Tried this:

'(?:\$|сум)(\040)?(\d{, 8})|(\d{, 8})(\040)?(?:\$|сум)'

It stopped matching anything.

What am I doing wrong?

Answer 1

\d{, 8}

Means nothing .Engine will match it literally and so your regex failed.

Use

\d{0,8}

No spaces inside {}