Regular Expressions 101

Pro

^start of line

Character Class[0-9a-zA-Z]+

+matches at least one character from the set below:

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Non-Capturing Group(?:, [0-9a-zA-Z]+){0,4}

{0,4}repeats the group contents below between 0 and 4 times:

, the literal text ,

Character Class[0-9a-zA-Z]+

+matches at least one character from the set below:

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

$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

^[0-9a-zA-Z]+(?:, [0-9a-zA-Z]+){0,4}$

New

1, 2, 3,
1, 2, 3, 4, 5,
1, 4, 6
1, 2, 3, 4, 5, 6
2
data, hi,
hello, something,bad