Regular Expressions 101

1a-pthe literal text 1a-p (case sensitive)

Group 1(\d+)

\d+a digit, repeated at least once

_2023the literal text _2023

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

1a-p(\d+)_2023

New

1a-p1_2023 -> extract 1 (the middle one)
1a-p12_2023 -> extract 12
1a-p7_2023 -> extract 7
1a-p145_2023 -> extract 145