Regular Expressions 101

Pro

httpthe literal text http (case sensitive)

Character Class[s]?

?matches at most one character from the set below:

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[w]{0,3}

{0,3}matches between 0 and 3 characters from the set below:

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

\.{0,1}optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1((?<!mydomain)[^\.].*)

Negative Lookbehind(?<!mydomain)

mydomainthe literal text mydomain (case sensitive)

Negated Character Class[^\.]

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

.*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.

25 tokens

http[s]?:\/\/[w]{0,3}\.{0,1}((?<!mydomain)[^\.].*)

http://regex101.
http://www.regex101.
https://regex101.
https://www.regex101.
https://www.mydomain.
https://mydomain.