regex101: PCRE (Legacy) Match Workspace

Pro

(?s)applies the following effective flags to the remainder of the pattern: gms

s modifier: single line. Allows a dot to match line terminators

^start of line

.*?any character, repeated any number of times

Non-Capturing Group(?:\s|^)?

?repeats the group contents below at most once:

1st Alternative\s

\sany whitespace character

2nd Alternative^

^start of line

Group time(?<time>(?<!\d)(?:0?\d[012]?)(?:-|:|\.)[0-5]\d(?:-|:|\.)[0-5]\d.*(?:a|A|p|P)(?:m|M))

Negative Lookbehind(?<!\d)

\da digit

Non-Capturing Group(?:0?\d[012]?)

0?optionally matches the literal 0 (48₁₀ / 60₈ / 30₁₆)

\da digit

Character Class[012]?

?matches at most one character from the set below:

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

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

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

3rd Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-5]

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

\da digit

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

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

3rd Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-5]

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

\da digit

.*any character, repeated any number of times

Non-Capturing Group(?:a|A|p|P)

1st Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

2nd AlternativeA

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

3rd Alternativep

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

4th AlternativeP

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

Non-Capturing Group(?:m|M)

1st Alternativem

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

2nd AlternativeM

.*any character, repeated any number of times

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

(?s)^.*?(?:\s|^)?(?<time>(?<!\d)(?:0?\d[012]?)(?:-|:|\.)[0-5]\d(?:-|:|\.)[0-5]\d.*(?:a|A|p|P)(?:m|M)).*

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The time is 12-jan-20 12:11:32.1112 AM.