Regular Expressions 101

^start of line

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da digit

\d?optionally matches a digit

Non-Capturing Group(?:,[1-9]\d\d?)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da digit

\d?optionally matches a digit

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[1-9]\d\d?(?:,[1-9]\d\d?)*$

12,123,56,567,789,11
1,23,456
025,123,456
1234,56,78