Regular Expressions 101

Explanation

Pro

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1((?:[^()]+|(?R))*+)

Non-Capturing Group(?:[^()]+|(?R))*+

*+repeats the group contents below any number of times:

1st Alternative[^()]+

Negated Character Class[^()]+

+matches at least one character outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(?R)

(?R)recurses into the entire pattern

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

\(((?:[^()]+|(?R))*+)\)

(Hello OR there) AND (big AND wide AND world)
(Hello OR there AND messing(it)up) AND (big AND wide AND world)

(Hello OR there) AND (big AND wide AND world)
(Hello OR there AND messing(it)up) AND (big AND wide AND world)