Regular Expressions 101

Pro

^start of line

Group 1((^|,)([0-9]+(-[0-9]+)?(,|$))+)

Group 2(^|,)

1st Alternative^

^start of line

2nd Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 3([0-9]+(-[0-9]+)?(,|$))+

+repeats the group contents below at least once:

Character Class[0-9]+

+matches at least one character from the set below:

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

Group 4(-[0-9]+)?

?repeats the group contents below at most once:

-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)

Group 5(,|$)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative$

$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.

25 tokens

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

New

1,2,3-5,6
1,2,3-5,6,
1
1-3
,1,2,3
23,25-89,99
23,12,3-5,15
1,2,3-,4,5-7
1,2,3-,4,5-7,
1,2,-3,4,5
1,2,-,3,4
1,2,,,3,4
1a2-2aoe

1,2,3-5,6
1,2,3-5,6,
1
1-3
,1,2,3
23,25-89,99
23,12,3-5,15
1,2,3-,4,5-7
1,2,3-,4,5-7,
1,2,-3,4,5
1,2,-,3,4
1,2,,,3,4
1a2-2aoe