Regular Expressions 101

(?+1)calls group 1 as a subroutine

Group name(?'name'[abc])

Character Class[abc]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

cthe literal c (99₁₀ / 143₈ / 63₁₆) (case sensitive)

(?1)calls group 1 as a subroutine

(?-1)calls group 1 as a subroutine

(?&name)calls group name as a subroutine

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

(?+1)(?'name'[abc])(?1)(?-1)(?&name)

New

abcab cabab