Regular Expressions 101

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Containmentsthe literal text Containments (case sensitive)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1(\d+)

\d+a digit, repeated at least once

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Non-Capturing Group(?:.*\n)+?

+?repeats the group contents below at least once:

.*any character (except for line terminators), repeated any number of times

\na line-feed (newline) character (ASCII 10)

activityId=the literal text activityId= (case sensitive)

Character Class[a-f0-9-]+

+matches at least one character from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

\[Containments\]\[(\d+)\](?:.*\n)+?activityId=[a-f0-9-]+

New

[Containments][2]
activityId=

[Containments][23]
activityId=cf1e94e6-6875-42b4-89c4-68a7c691dd70