Regular Expressions 101

Explanation

Pro

^start of line

Group 1(000[1-9]|00[1-9]\d|0[1-9]\d\d|100\d|10[1-9]\d|1[1-9]\d{2}|[2-9]\d{3}|[1-9]\d{4}|1\d{5}|2[0-6]\d{4}|27[0-4]\d{3}|275[0-6]\d{2}|2757[0-5]\d|275760)

1st Alternative000[1-9]

000the literal text 000

Character Class[1-9]

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

2nd Alternative00[1-9]\d

00the literal text 00

Character Class[1-9]

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

\da digit

3rd Alternative0[1-9]\d\d

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

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

\da digit

\da digit

4th Alternative100\d

100the literal text 100

\da digit

5th Alternative10[1-9]\d

10the literal text 10

Character Class[1-9]

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

\da digit

6th Alternative1[1-9]\d{2}

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[1-9]

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

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

7th Alternative[2-9]\d{3}

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

\d{3}a digit, repeated exactly 3 times

8th Alternative[1-9]\d{4}

Character Class[1-9]

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

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

9th Alternative1\d{5}

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\d{5}a digit, repeated exactly 5 times

10th Alternative2[0-6]\d{4}

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-6]

0-6one character from 0 (48₁₀) to 6 (54₁₀)

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

11th Alternative27[0-4]\d{3}

27the literal text 27

Character Class[0-4]

0-4one character from 0 (48₁₀) to 4 (52₁₀)

\d{3}a digit, repeated exactly 3 times

12th Alternative275[0-6]\d{2}

275the literal text 275

Character Class[0-6]

0-6one character from 0 (48₁₀) to 6 (54₁₀)

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

13th Alternative2757[0-5]\d

2757the literal text 2757

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da digit

14th Alternative275760

-Wthe literal text -W (case sensitive)

Group 2(([1-4]\d)|(5[0-3])|0[1-9])

$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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

26 tokens

Regular Expression

^(000[1-9]|00[1-9]\d|0[1-9]\d\d|100\d|10[1-9]\d|1[1-9]\d{2}|[2-9]\d{3}|[1-9]\d{4}|1\d{5}|2[0-6]\d{4}|27[0-4]\d{3}|275[0-6]\d{2}|2757[0-5]\d|275760)-W(([1-4]\d)|(5[0-3])|0[1-9])$

New

min possible year :
0001-W10

max possible year :
275760-W05

min possible week :
1969-W01

max possible week :
1969-W53

Extraction

min possible year :
0001-W10

max possible year :
275760-W05

min possible week :
1969-W01

max possible week :
1969-W53