Regular Expressions 101

Explanation

Pro

^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:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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.

26 tokens

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

New

1,2,3
1
1,2,
11,2,3443,ed
11,2,33,1322
11,3,,
11,34234,
,,,,1,,2dgd,d,
1,2,3,
,1,2,,,3

1,2,3
1
1,2,
11,2,3443,ed
11,2,33,1322
11,3,,
11,34234,
,,,,1,,2dgd,d,
1,2,3,
,1,2,,,3