Regular Expressions 101

^start of line

Group 1([a-z0-9]+[\-|\.]{0,1})+

+repeats the group contents below at least once:

Character Class[a-z0-9]+

+matches at least one character from the set below:

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

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

Character Class[\-|\.]{0,1}

{0,1}matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-z0-9]

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

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

@the literal @ (64₁₀ / 100₈ / 40₁₆)

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^([a-z0-9]+[\-|\.]{0,1})+[a-z0-9]@

New

xxx.sub-domena.vege.love

sub-domena.sub-do-main.dom-ain.com.pl

sub-domena.sub-do-main.dom-ain.co

sub-domena.sub-do-main.dom-ain.vege.love

vege.love

Maxi.Max@

Max-Wielk.Amiu-Max@

maxiu-maxiu-max@

Regular Expression

Extraction