Regular Expressions 101

^start of line

\d+a digit, repeated at least once

Group 1((,\d)?(-(\d+)?(,\d)?)?)?

?repeats the group contents below at most once:

Group 2(,\d)?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\da digit

Group 3(-(\d+)?(,\d)?)?

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4(\d+)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 5(,\d)?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\da 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

^\d+((,\d)?(-(\d+)?(,\d)?)?)?$

New

13,4
5,66876876
13,4-15,6
4-5
5
45
34,534
13,7-14
14-15,6
14-15,67
1,236
14,5-15
15-16,5
4,5-16,76
100,4
100,45
100,45-100,4
100,4-100,54
100,5-123323,5

Regular Expression

Extraction