Regular Expressions 101

1st Alternative(?x)([A-Z]\.)+

(?x)applies the following effective flags to the remainder of the pattern: smgx

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Group 1([A-Z]\.)+

+repeats the group contents below at least once:

Character Class[A-Z]

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative\$?\d+(\.\d+)?%?

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

\d+a Unicode decimal digit, repeated at least once

Group 2(\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a Unicode decimal digit, repeated at least once

%?optionally matches the literal % (37₁₀ / 45₈ / 25₁₆)

3rd Alternative\w+([-']\w+)*

\w+a Unicode word character, repeated at least once

Group 3([-']\w+)*

*repeats the group contents below any number of times:

Character Class[-']

-the literal - (45₁₀ / 55₈ / 2D₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\w+a Unicode word character, repeated at least once

4th Alternative[+/\-@&*]

Character Class[+/\-@&*]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Global pattern flags

s modifier: single line. Allows a dot to match line terminators

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?x)([A-Z]\.)+|\$?\d+(\.\d+)?%?|\w+([-']\w+)*|[+/\-@&*]

New

32188
2598473
26 letters from A to Z
3.14 is pi.
My weight is about 68 kg, +/- 10 grams.
Good muffins cost $3.88 in New York
U.S.A.