Regular Expressions 101

^start of line

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?:[,-][0-9]+)*

*repeats the group contents below any number of times:

Character Class[,-]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$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

^[0-9]+(?:[,-][0-9]+)*$

New

1,3-4,9-11
1,,3--4,9-11
1,-3-4,9-11
1-,3-4,9-11