Regular Expressions 101

Pro

Non-Capturing Group(?:9\d|1\d{2})

1st Alternative9\d

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\da Unicode decimal digit

2nd Alternative1\d{2}

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

Non-Capturing Group(?:\s|-)?

?repeats the group contents below at most once:

1st Alternative\s

\sa Unicode whitespace character

2nd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

yearthe literal text year (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

Non-Capturing Group(?:\s|-)?

?repeats the group contents below at most once:

1st Alternative\s

\sa Unicode whitespace character

2nd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

oldthe literal text old (case sensitive)

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.

25 tokens

(?:9\d|1\d{2})(?:\s|-)?years?(?:\s|-)?old

New

18year old 23 year old 99 years old but not 25-year-old and 91year old cousin is 99 now and 90-year-old or 102 year old

18year old 23 year old 99 years old but not 25-year-old and 91year old cousin is 99 now and 90-year-old or 102 year old