Regular Expressions 101

Pro

\ban ASCII word boundary

Group 1((?:\d{1,2}(?:\.|\/|-)){2}(?:\d{4}|\d{2}))

Non-Capturing Group(?:\d{1,2}(?:\.|\/|-)){2}

{2}repeats the group contents below exactly 2 times:

\d{1,2}a digit, repeated between 1 and 2 times

Non-Capturing Group(?:\.|\/|-)

1st Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:\d{4}|\d{2})

1st Alternative\d{4}

\d{4}a digit, repeated exactly 4 times

2nd Alternative\d{2}

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

\ban ASCII word boundary

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

Regular Expression

\b((?:\d{1,2}(?:\.|\/|-)){2}(?:\d{4}|\d{2}))\b

New

01.11.11 12/12/1981 1*51*12 . 22|1|13 03-02-1919 1-22-12 or 01-23-18 or 03-23-1984 01.11.18 or 2.2.17 or 02.02.18 or 12.1.16 12.23.1943 01-23-11 not 12.23.192 not 02.02.1