regex101: PCRE (Legacy) Match Workspace

1st AlternativeSent: Monday,

Sent: Monday, the literal text Sent: Monday, (case sensitive)

2nd AlternativeTuesday,

Tuesday, the literal text Tuesday, (case sensitive)

3rd AlternativeWednesday,

Wednesday, the literal text Wednesday, (case sensitive)

4th AlternativeThursday,

Thursday, the literal text Thursday, (case sensitive)

5th AlternativeFriday,

Friday, the literal text Friday, (case sensitive)

6th AlternativeSaturday,

Saturday, the literal text Saturday, (case sensitive)

7th AlternativeSunday,

Sunday, the literal text Sunday, (case sensitive)

Group 1(\d\d\s|\d\s)

1st Alternative\d\d\s

\da digit

\sany whitespace character

2nd Alternative\d\s

\da digit

\sany whitespace character

1st AlternativeJanuary

January the literal text January (case sensitive)

2nd AlternativeFebruary

February the literal text February (case sensitive)

3rd AlternativeMarch

March the literal text March (case sensitive)

4th AlternativeApril

April the literal text April (case sensitive)

5th AlternativeMay

May the literal text May (case sensitive)

6th AlternativeJune

June the literal text June (case sensitive)

7th AlternativeJuly

July the literal text July (case sensitive)

8th AlternativeAugust

August the literal text August (case sensitive)

9th AlternativeSeptember

September the literal text September (case sensitive)

10th AlternativeOctober

October the literal text October (case sensitive)

11th AlternativeNovember

November the literal text November (case sensitive)

12th AlternativeDecember

December the literal text December (case sensitive)

Group 3(20\d\d)

20the literal text 20

\da digit

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

(?<=Sent: Monday, |Tuesday, |Wednesday, |Thursday, |Friday, |Saturday, |Sunday, )(\d\d\s|\d\s)(January |February |March |April |May |June |July |August |September |October |November |December )(20\d\d)

New

From: john@workplace.com
Sent: Thursday, 23 May 2019 7:14 AM
To: Team Inbox
Subject: Send me some more cookies

Regular Expressions 101

Regular Expression

Substitution