Regular Expressions 101

Positive Lookbehind(?<=key\s)

keythe literal text key (case sensitive)

\sany whitespace character

\d+a digit, repeated at least once

Non-Capturing Group(?:\s*(?:,|and)\s*\d+)*

*repeats the group contents below any number of times:

\s*any whitespace character, repeated any number of times

Non-Capturing Group(?:,|and)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternativeand

andthe literal text and (case sensitive)

\s*any whitespace character, repeated any number of times

\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

(?<=key\s)\d+(?:\s*(?:,|and)\s*\d+)*

New

some text key 1, 2, 3 ,4 and 5. some other text dog 6, 7, 8, 9 and 10. some text