Regular Expressions 101

^start of line

Group 1(["']?)

Character Class["']?

?matches at most one character from the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2(\$?([0-9]{1,3},([0-9]{3},?)*[0-9]{3}|[0-9]{1,3})((.[0-9]{0,3})[0-9]{0,10})?)

\$?optionally matches the literal $ (36₁₀ / 44₈ / 24₁₆)

Group 3([0-9]{1,3},([0-9]{3},?)*[0-9]{3}|[0-9]{1,3})

1st Alternative[0-9]{1,3},([0-9]{3},?)*[0-9]{3}

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 4([0-9]{3},?)*

*repeats the group contents below any number of times:

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

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

,?optionally matches the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

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

2nd Alternative[0-9]{1,3}

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Group 5((.[0-9]{0,3})[0-9]{0,10})?

?repeats the group contents below at most once:

Group 6(.[0-9]{0,3})

.any character (except for line terminators)

Character Class[0-9]{0,3}

{0,3}matches between 0 and 3 characters from the set below:

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

Character Class[0-9]{0,10}

{0,10}matches between 0 and 10 characters from the set below:

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

\1the text saved by group 1

$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

No unit tests · Add a test to get started

Search reference

Regular Expression

^(["']?)(\$?([0-9]{1,3},([0-9]{3},?)*[0-9]{3}|[0-9]{1,3})((.[0-9]{0,3})[0-9]{0,10})?)\1$

There are no unit tests, click to add some.