Regular Expressions 101

Save & Share

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

/
/
i

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?i)Aankomst:\sMAANDAG\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|dinsdag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|woensdag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|donderdag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|vrijdag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|zaterdag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:|zondag\s([0-9][0-9]\/[0-9][0-9]\/[0-9][0-9][0-9][0-9])\s\s\s\sVertrek:" Local $sString = " +++++++++++++++++++++++++++++++++++++++++++++++" & @CRLF & _ " + Ref Document: 137165 +" & @CRLF & _ " +++++++++++++++++++++++++++++++++++++++++++++++" & @CRLF & _ "From: jamirequest@jetair.be" & @CRLF & _ "emaildestin;L ;137165;yourname" & @CRLF & _ "" & @CRLF & _ "jetair@groupepvcp.com" & @CRLF & _ "CENTER PARCS ERPERHEIDE Uw code: 78154 / BLI" & @CRLF & _ " Datum: 18/11/15" & @CRLF & _ " ***** Reservering in allotment *****" & @CRLF & _ "Reserveringsnummer: 021146151 SJ Reserveringsdatum: 18/11/2015" & @CRLF & _ "" & @CRLF & _ "Gelieve de volgende reservering te noteren aub aan contractprijs" & @CRLF & _ "" & @CRLF & _ "Aankomst: zondag 01/02/2016 Vertrek: vrijdag 05/02/2016 4 Nachten." & @CRLF & _ "" & @CRLF & _ " 1 x type 30: EP082 app. 2 pers. comfort" & @CRLF & _ " Bad of douche, Terras, TV, Kitchenette" & @CRLF & _ " In allotment" & @CRLF & _ " Logies" & @CRLF & _ " MIDWEEKVERBLIJF" & @CRLF & _ " 01/02/16 - 05/02/16" & @CRLF & _ " EARLY BOOKING" & @CRLF & _ "" & @CRLF & _ " Mr. D.DEBERGH 28 jaar" & @CRLF & _ " Mevr. S.BOUDEN 25 jaar" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "Het is niet nodig deze reservering te herbevestigen" & @CRLF & _ "" & @CRLF & _ "Opmerkingen/speciale wensen" & @CRLF & _ " indien mogelijk babybed" & @CRLF & _ "" & @CRLF & _ "cpref,021146151,..." & @CRLF & _ "Einde van het bericht" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm