Regular Expressions 101

Non-Capturing Group(?:http[s]*\:\/\/)*

*repeats the group contents below any number of times:

httpthe literal text http (case sensitive)

Character Class[s]*

*matches any number of characters from the set below:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group dstdomain(?<dstdomain>\w*[\-]*\w*\.[a-zA-Z]*)

\w*any word character, repeated any number of times

Character Class[\-]*

*matches any number of characters from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\w*any word character, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]*

*matches any number of 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)

Non-Capturing Group(?:$|\:.*|\/.*)

1st Alternative$

$end of line

2nd Alternative\:.*

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

.*any character (except for line terminators), repeated any number of times

3rd Alternative\/.*

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

.*any character (except for line terminators), repeated any number of times

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.

Search reference

Regular Expression

(?:http[s]*\:\/\/)*(?<dstdomain>\w*[\-]*\w*\.[a-zA-Z]*)(?:$|\:.*|\/.*)

New

#Extract domain from url into dstdomain variable

https://www.google.fr
https://www.google.fr/search?source=hp&ei=Hr
image32.webcar.truc.fr
image32.webcar.truc-machin.fr
image32.webcar.truc-machin.fr/image/text.html
http://machin.fr
intercom.b.super.com:443
https://superdomain.com:26080/image/truc.gif
https://group.bnpparibas/agenda
group.bnpparibas:443/agenda

Regular Expression

Substitution