Regular Expressions 101

Pro

\w+any word character, repeated at least once

@ the literal text @

Group 1([-a-zA-Z\d.]{1,61})

Character Class[-a-zA-Z\d.]{1,61}

{1,61}matches between 1 and 61 characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

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

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{2,4}

{2,4}matches between 2 and 4 characters from the set below:

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

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

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

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\w+@
([-a-zA-Z\d.]{1,61})\.[a-zA-Z]{2,4}

a@b.cde.

Va$ya123@..ruuuuuuuuuuuuuuuuuuuuuuuuu
andrey@mail.t.com.ua
____________________________________________________________________@.ru
as@m.t.tu