Regular Expressions 101

(?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.

Search reference

Regular Expression

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

New

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