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
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)<NewMarket sysname="SOCCER(.*?)ODD_EVEN" Local $sString = "<NewMarket sysname="SOCCER_CORNERS_FIRST_HALF_DOUBLE_CHANCE" name="1st Half Corners Double Chance" voidRule="false" settleRule="[Period] &gt;= [HT]">" & @CRLF & _ " <Mappings>" & @CRLF & _ " <OldMarket sysname="SOCCER_CORNERS_HALFTIME_DOUBLE_CHANCE" />" & @CRLF & _ " </Mappings>" & @CRLF & _ " <MarketDefinition captionEn="1st Half Corners Double Chance" captionEl="Διπλή Ευκαιρία Κόρνερ Ημιχρόνου">" & @CRLF & _ " <Odds>" & @CRLF & _ " <Bet code="1X" name="HomeDraw" captionEn="{HomeTeam} / Draw" settleRule="[HomeCorners1H] &gt;= [AwayCorners1H]" />" & @CRLF & _ " <Bet code="X2" name="DrawAway" captionEn="{AwayTeam} / Draw" settleRule="[HomeCorners1H] &lt;= [AwayCorners1H]" />" & @CRLF & _ " <Bet code="12" name="HomeAway" captionEn="{HomeTeam} / {AwayTeam}" settleRule="[HomeCorners1H] &gt; [AwayCorners1H] || [HomeCorners1H] &lt; [AwayCorners1H]" />" & @CRLF & _ " </Odds>" & @CRLF & _ " </MarketDefinition>" & @CRLF & _ " </NewMarket>" & @CRLF & _ " <NewMarket sysname="SOCCER_CORNERS_ODD_EVEN" name="Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [FT]">" & @CRLF & _ " <Mappings>" & @CRLF & _ " <OldMarket sysname="SOCCER_CORNERS_ODD_EVEN" />" & @CRLF & _ " </Mappings>" & @CRLF & _ " <MarketDefinition captionEn="Match Corners Odd/Even" captionEl="Μονά Ή Ζυγά Κόρνερ Αγώνα">" & @CRLF & _ " <Odds>" & @CRLF & _ " <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners] % 2) = 1" />" & @CRLF & _ " <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners] % 2) = 0" />" & @CRLF & _ " </Odds>" & @CRLF & _ " </MarketDefinition>" & @CRLF & _ " </NewMarket>" & @CRLF & _ " <NewMarket sysname="SOCCER_CORNERS_FIRST_HALF_ODD_EVEN" name="1st Half Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [HT]">" & @CRLF & _ " <Mappings>" & @CRLF & _ " <OldMarket sysname="SOCCER_CORNERS_FIRST_HALF_ODD_EVEN" />" & @CRLF & _ " </Mappings>" & @CRLF & _ " <MarketDefinition captionEn="1st Half Odd/Even Corners" captionEl="Μονά Ή Ζυγά Κόρνερ 1ου Ημιχρόνου">" & @CRLF & _ " <Odds>" & @CRLF & _ " <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners1H] % 2) = 1" />" & @CRLF & _ " <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners1H] % 2) = 0" />" & @CRLF & _ " </Odds>" & @CRLF & _ " </MarketDefinition>" & @CRLF & _ " </NewMarket>" & @CRLF & _ " <NewMarket sysname="SOCCER_CORNERS_SECOND_HALF_ODD_EVEN" name="2nd Half Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [FT]">" & @CRLF & _ " <Mappings>" & @CRLF & _ " <OldMarket sysname="SOCCER_CORNERS_SECOND_HALF_ODD_EVEN" />" & @CRLF & _ " </Mappings>" & @CRLF & _ " <MarketDefinition captionEn="2nd Half Odd/Even Corners" captionEl="Μονά Ή Ζυγά Κόρνερ 2ου Ημιχρόνου">" & @CRLF & _ " <Odds>" & @CRLF & _ " <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners2H] % 2) = 1" />" & @CRLF & _ " <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners2H] % 2) = 0" />" & @CRLF & _ " </Odds>" & @CRLF & _ " </MarketDefinition>" & @CRLF & _ " </NewMarket>" & @CRLF & _ " <NewMarket sysname="SOCCER_CORNERS_RESULT_NO_DRAW" name="Corners Draw No Bet" voidRule="[Period] &gt;= [FT] &amp;&amp; [HomeCorners] = [AwayCorners]" settleRule="[Period] &gt;= [FT] &amp;&amp; [HomeCorners] != [AwayCorners]">" & @CRLF & _ " <Mappings>" & @CRLF & _ " <OldMarket sysname="SOCCER_CORNERS_RESULT_NO_DRAW" />" & @CRLF & _ " </Mappings>" & @CRLF & _ " <MarketDefinition captionEn="Match Corners Draw no bet" captionEl="Νικητής Κόρνερ Αγώνα Ισοπαλία ΄Οχι Στοίχημα">" & @CRLF & _ " <Odds>" & @CRLF & _ " <Bet code="1" name="Home" captionEn="{HomeTeam}" settleRule="[HomeCorners] &gt; [AwayCorners]" />" & @CRLF & _ " <Bet code="2" name="Away" captionEn="{AwayTeam}" settleRule="[HomeCorners] &lt; [AwayCorners]" />" & @CRLF & _ " </Odds>" & @CRLF & _ " </MarketDefinition>" & @CRLF & _ " </NewMarket>" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($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