regex101: Date of birth

*repeats the group contents below any number of times:

1st Alternativemy date of birth is

my date of birth isthe literal text my date of birth is (case insensitive)

2nd Alternativemy birthdate is

my birthdate isthe literal text my birthdate is (case insensitive)

3rd Alternativemy birthday is

my birthday isthe literal text my birthday is (case insensitive)

4th Alternativemy bday is

my bday isthe literal text my bday is (case insensitive)

5th Alternativei was born on

i was born onthe literal text i was born on (case insensitive)

6th Alternativedate of birth is

date of birth isthe literal text date of birth is (case insensitive)

7th Alternativedob is

dob isthe literal text dob is (case insensitive)

8th Alternativebirthdate is

birthdate isthe literal text birthdate is (case insensitive)

9th Alternativemy dob is

my dob isthe literal text my dob is (case insensitive)

10th Alternativebirthday

birthdaythe literal text birthday (case insensitive)

11th Alternativebirth date is

birth date isthe literal text birth date is (case insensitive)

Group 2(\s)*

*repeats the group contents below any number of times:

\sany whitespace character

Group 3(((0)[0-9])|((1)[0-2])|(January|Jan|February|Feb|March|Mar|April|Apr|May|June|Jun|July|Jul|August|Aug|September|Sep|October|Oct|November|Nov|December|Dec))

1st Alternative((0)[0-9])

Group 4((0)[0-9])

Group 5(0)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

2nd Alternative((1)[0-2])

Group 6((1)[0-2])

Group 7(1)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

3rd Alternative(January|Jan|February|Feb|March|Mar|April|Apr|May|June|Jun|July|Jul|August|Aug|September|Sep|October|Oct|November|Nov|December|Dec)

Group 8(January|Jan|February|Feb|March|Mar|April|Apr|May|June|Jun|July|Jul|August|Aug|September|Sep|October|Oct|November|Nov|December|Dec)

1st AlternativeJanuary

Januarythe literal text January (case insensitive)

2nd AlternativeJan

3rd AlternativeFebruary

4th AlternativeFeb

5th AlternativeMarch

6th AlternativeMar

7th AlternativeApril

8th AlternativeApr

9th AlternativeMay

10th AlternativeJune

11th AlternativeJun

12th AlternativeJuly

13th AlternativeJul

14th AlternativeAugust

15th AlternativeAug

16th AlternativeSeptember

17th AlternativeSep

18th AlternativeOctober

19th AlternativeOct

20th AlternativeNovember

21st AlternativeNov

22nd AlternativeDecember

23rd AlternativeDec

Group 9(\/|.|-)

Group 10([0-2][0-9]|(3)[0-1])

Group 12(\/|.|-)

\d{2,4}a digit, repeated between 2 and 4 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

25 tokens

Regular Expression

(my date of birth is|my birthdate is|my birthday is|my bday is|i was born on|date of birth is|dob is|birthdate is|my dob is|birthday|birth date is)*(\s)*(((0)[0-9])|((1)[0-2])|(January|Jan|February|Feb|March|Mar|April|Apr|May|June|Jun|July|Jul|August|Aug|September|Sep|October|Oct|November|Nov|December|Dec))(\/|.|-)([0-2][0-9]|(3)[0-1])(\/|.|-)\d{2,4}

New

1. dob is 12-19-1994
2. 1234
3. 4567
4. 09/19/1993
5. Mar 14 1954
6. asd 
7. dob is 12-12-1234
8. 4456
9. 352345
12345678
09-19-1993
09.19.1993
"09.19.1993"
january 10 2021
09191993

Substitution

$1