Regular Expressions 101

Explanation

Pro

^start of line

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

://the literal text ://

Group 1(www.)?

?repeats the group contents below at most once:

wwwthe literal text www (case sensitive)

.any character (except for line terminators)

Character Class[A-z0-9]+

+matches at least one character from the set below:

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-z0-9]+

+matches at least one character from the set below:

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

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

$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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

26 tokens

Regular Expression

^https?://(www.)?[A-z0-9]+\.[A-z0-9]+$

New

emreyl.yldrm@yandex.com
emMMreylyl-yl@gmail.com
emMMreylyl-yl@gmail.com
-emreyl.yldrm@yandex.com
9emreyl.yldrm@yandex.com

https://regex101.com/r/IljuUr/
https://www.youtube.com
http://arin.com
https://stackoverflow.com

Extraction

emreyl.yldrm@yandex.com
emMMreylyl-yl@gmail.com
emMMreylyl-yl@gmail.com
-emreyl.yldrm@yandex.com
9emreyl.yldrm@yandex.com

https://regex101.com/r/IljuUr/
https://www.youtube.com
http://arin.com
https://stackoverflow.com