regex101: PCRE (Legacy) Match Workspace

^start of line

Non-Capturing Group(?:[1-9]|[12][0-9]|3[01])

1st Alternative[1-9]

Character Class[1-9]

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

2nd Alternative[12][0-9]

Character Class[12]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-9]

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

3rd Alternative3[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Non-Capturing Group(?: *- *(?:[1-9]|[12][0-9]|3[01]))?

?repeats the group contents below at most once:

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Non-Capturing Group(?:[1-9]|[12][0-9]|3[01])

1st Alternative[1-9]

Character Class[1-9]

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

2nd Alternative[12][0-9]

Character Class[12]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-9]

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

3rd Alternative3[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Non-Capturing Group(?: *, *(?:[1-9]|[12][0-9]|3[01])(?: *- *(?:[1-9]|[12][0-9]|3[01]))?)*

*repeats the group contents below any number of times:

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Non-Capturing Group(?:[1-9]|[12][0-9]|3[01])

1st Alternative[1-9]

Character Class[1-9]

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

2nd Alternative[12][0-9]

Character Class[12]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-9]

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

3rd Alternative3[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

Non-Capturing Group(?: *- *(?:[1-9]|[12][0-9]|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

Search reference

Regular Expression

^(?:[1-9]|[12][0-9]|3[01])(?: *- *(?:[1-9]|[12][0-9]|3[01]))?(?: *, *(?:[1-9]|[12][0-9]|3[01])(?: *- *(?:[1-9]|[12][0-9]|3[01]))?)*$

New

1-30, 27, 3, 13

10-27

Regular Expressions 101

Regular Expression

Substitution