[regex] Limit length of characters in a regular expression?

Is there a way to limit a regular expression to 100 characters WITH a regular expression?

\[size=(.*?)\](.*?)\[\/size]

So Look at me! wouldn't work.

I want to limit the numbers, only allow numbers between 1 and 100.

If you want to restrict valid input to integer values between 1 and 100, this will do it:

^([1-9]|[1-9][0-9]|100)$

Explanation:

1. ^ = start of input
2. () = multiple options to match
3. First argument [1-9] - matches any entries between 1 and 9
4. | = OR argument separator
5. Second Argument [1-9][0-9] - matches entries between 10 and 99
6. Last Argument 100 - Self explanatory - matches entries of 100

This WILL NOT ACCEPT: 1. Zero - 0 2. Any integer preceded with a zero - 01, 021, 001 3. Any integer greater than 100

Hope this helps!

Gez

Limit the length of characters in a regular expression? ^[a-z]{6,15}$'

Limit length of characters or Numbers in a regular expression? ^[a-z | 0-9]{6,15}$'

(^(\d{2})|^(\d{4})|^(\d{5}))$

This expression takes the number of length 2,4 and 5. Valid Inputs are 12 1234 12345

If you want numbers from 1 up to 100:

100|[1-9]\d?