regex101: PCRE (Legacy) Match Workspace

Pro

^start of line

Non-Capturing Group(?:(?:0[1-9]|1\d|2[0-8])([\/-])(?:02)\1(?:\d+)|(?:0[1-9]|1\d|2\d)([\/-])(?:02)\2(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))|(?:0[1-9]|1\d|2\d|30)([\/-])(?:0[469]|11)\3(?:\d+)|(?:0[1-9]|1\d|2\d|3[01])([\/-])(?:0[13578]|1[02])\4(?:\d+)|(?:02)([\/-])(?:0[1-9]|1\d|2[0-8])\5(?:\d+)|(?:02)([\/-])(?:0[1-9]|1\d|2\d)\6(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))|(?:0[469]|11)([\/-])(?:0[1-9]|1\d|2\d|30)\7(?:\d+)|(?:0[13578]|1[02])([\/-])(?:0[1-9]|1\d|2\d|3[01])\8(?:\d+)|(?:\d+)([\/-])(?:0[1-9]|1\d|2[0-8])\9(?:02)|(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:0[1-9]|1\d|2\d)\10(?:02)|(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|30)\11(?:0[469]|11)|(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|3[01])\12(?:0[13578]|1[02])|(?:\d+)([\/-])(?:02)\13(?:0[1-9]|1\d|2[0-8])|(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:02)\14(?:0[1-9]|1\d|2\d)|(?:\d+)([\/-])\15(?:0[469]|11)(?:0[1-9]|1\d|2\d|30)|(?:\d+)([\/-])(?:0[13578]|1[02])\16(?:0[1-9]|1\d|2\d|3[01]))

1st Alternative(?:0[1-9]|1\d|2[0-8])([\/-])(?:02)\1(?:\d+)

Non-Capturing Group(?:0[1-9]|1\d|2[0-8])

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative1\d

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da digit

3rd Alternative2[0-8]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-8]

0-8one character from 0 (48₁₀) to 8 (56₁₀)

Group 1([\/-])

Character Class[\/-]

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:02)

02the literal text 02

\1the text saved by group 1

Non-Capturing Group(?:\d+)

\d+a digit, repeated at least once

2nd Alternative(?:0[1-9]|1\d|2\d)([\/-])(?:02)\2(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))

Non-Capturing Group(?:0[1-9]|1\d|2\d)

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative1\d

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da digit

3rd Alternative2\d

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

\da digit

Group 2([\/-])

Character Class[\/-]

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:02)

02the literal text 02

\2the text saved by group 2

Non-Capturing Group(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))

Non-Capturing Group(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])

1st Alternative\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))

\d*?a digit, repeated any number of times

Non-Capturing Group(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))

1st Alternative(?:0[48]|[13579][26]|[2468][048])

2nd Alternative(?:(?:[02468][048]|[13579][26])00)

2nd Alternative[48]00

3rd Alternative[48]

Positive Lookahead(?=\D|\b)

3rd Alternative(?:0[1-9]|1\d|2\d|30)([\/-])(?:0[469]|11)\3(?:\d+)

4th Alternative(?:0[1-9]|1\d|2\d|3[01])([\/-])(?:0[13578]|1[02])\4(?:\d+)

5th Alternative(?:02)([\/-])(?:0[1-9]|1\d|2[0-8])\5(?:\d+)

6th Alternative(?:02)([\/-])(?:0[1-9]|1\d|2\d)\6(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))

7th Alternative(?:0[469]|11)([\/-])(?:0[1-9]|1\d|2\d|30)\7(?:\d+)

8th Alternative(?:0[13578]|1[02])([\/-])(?:0[1-9]|1\d|2\d|3[01])\8(?:\d+)

9th Alternative(?:\d+)([\/-])(?:0[1-9]|1\d|2[0-8])\9(?:02)

10th Alternative(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:0[1-9]|1\d|2\d)\10(?:02)

11th Alternative(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|30)\11(?:0[469]|11)

12th Alternative(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|3[01])\12(?:0[13578]|1[02])

13th Alternative(?:\d+)([\/-])(?:02)\13(?:0[1-9]|1\d|2[0-8])

14th Alternative(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:02)\14(?:0[1-9]|1\d|2\d)

15th Alternative(?:\d+)([\/-])\15(?:0[469]|11)(?:0[1-9]|1\d|2\d|30)

16th Alternative(?:\d+)([\/-])(?:0[13578]|1[02])\16(?:0[1-9]|1\d|2\d|3[01])

$end of line

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

25 tokens

Regular Expression

^(?:(?:0[1-9]|1\d|2[0-8])([\/-])(?:02)\1(?:\d+)|(?:0[1-9]|1\d|2\d)([\/-])(?:02)\2(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))|(?:0[1-9]|1\d|2\d|30)([\/-])(?:0[469]|11)\3(?:\d+)|(?:0[1-9]|1\d|2\d|3[01])([\/-])(?:0[13578]|1[02])\4(?:\d+)|(?:02)([\/-])(?:0[1-9]|1\d|2[0-8])\5(?:\d+)|(?:02)([\/-])(?:0[1-9]|1\d|2\d)\6(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))|(?:0[469]|11)([\/-])(?:0[1-9]|1\d|2\d|30)\7(?:\d+)|(?:0[13578]|1[02])([\/-])(?:0[1-9]|1\d|2\d|3[01])\8(?:\d+)|(?:\d+)([\/-])(?:0[1-9]|1\d|2[0-8])\9(?:02)|(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:0[1-9]|1\d|2\d)\10(?:02)|(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|30)\11(?:0[469]|11)|(?:\d+)([\/-])(?:0[1-9]|1\d|2\d|3[01])\12(?:0[13578]|1[02])|(?:\d+)([\/-])(?:02)\13(?:0[1-9]|1\d|2[0-8])|(?:(?:\d*?(?:(?:0[48]|[13579][26]|[2468][048])|(?:(?:[02468][048]|[13579][26])00))|[48]00|[48])(?=\D|\b))([\/-])(?:02)\14(?:0[1-9]|1\d|2\d)|(?:\d+)([\/-])\15(?:0[469]|11)(?:0[1-9]|1\d|2\d|30)|(?:\d+)([\/-])(?:0[13578]|1[02])\16(?:0[1-9]|1\d|2\d|3[01]))$

New

30/11/2017
30-11-2017
2017-05-31

30-/11-/2017
30-11/2017

Extraction

30/11/2017
30-11-2017
2017-05-31

30-/11-/2017
30-11/2017