Regular Expressions 101

^start of line

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

\ban ASCII word boundary

Group 1(\d+)

\d+a digit, repeated at least once

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

^[\s\S]*\b(\d+)

Test String
New

My ID is 112243 and my phone number is 0987654321. Thanks you.
My ID is 112243 and my phone number is 0987654321. Thanks you.
My ID is 112243 and my phone number is 0987654321. Thanks you.

Regular Expression

Test StringNew

SubstitutionProcessing...

Test String
New

Substitution
Processing...