Regular Expressions 101

Pro

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

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

Negative Lookbehind(?<![^\W_])

Negated Character Class[^\W_]

\Wany non-word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

active usersthe literal text active users (case insensitive)

Negative Lookahead(?![^\W_])

Negated Character Class[^\W_]

\Wany non-word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

(?i)(?<![^\W_])active users(?![^\W_])

New

Active users_test
Test_ACTIVE USERS
AcTiVE Users, active users, ACTIVE USERS

Active users_test
Test_ACTIVE USERS
AcTiVE Users, active users, ACTIVE USERS