Regular Expressions 101

Pro

(?i)applies the following effective flags to the remainder of the pattern: gmi

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

Group 1(you)

youthe literal text you (case insensitive)

Non-Capturing Group(?:(?!you).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!you)

youthe literal text you (case insensitive)

.any character (except for line terminators)

Group 2(to)

tothe literal text to (case insensitive)

Non-Capturing Group(?:(?!to).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!to)

tothe literal text to (case insensitive)

.any character (except for line terminators)

Group 3(regex)

regexthe literal text regex (case insensitive)

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

(?i)(you)(?:(?!you).)*(to)(?:(?!to).)*(regex)

New

"You know Regex. You have to know Regex more. You have to know everything of Regex."

"You know Regex. You have to know Regex more. You have to know everything of Regex."