Regular Expressions 101

Save & Share

  • Regex Version: ver. 1
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

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

/
/
gm

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 = "(?m)(BEGIN:VCARD([\s\S]*?)END:VCARD)" Local $sString = "BEGIN:VCARD" & @CRLF & _ "VERSION:3.0" & @CRLF & _ "N:Doe;John;;;" & @CRLF & _ "FN:John Doe" & @CRLF & _ "ORG:Example.com Inc.;" & @CRLF & _ "TITLE:Imaginary test person" & @CRLF & _ "EMAIL;type=INTERNET;type=WORK;type=pref:johnDoe@example.org" & @CRLF & _ "TEL;type=WORK;type=pref:+1 617 555 1212" & @CRLF & _ "TEL;type=WORK:+1 (617) 555-1234" & @CRLF & _ "TEL;type=CELL:+1 781 555 1212" & @CRLF & _ "TEL;type=HOME:+1 202 555 1212" & @CRLF & _ "NOTE:John Doe has a long and varied history\, being documented on more police files that anyone else. Reports of his death are alas numerous." & @CRLF & _ "CATEGORIES:Work,Test group" & @CRLF & _ "X-ABUID:5AD380FD-B2DE-4261-BA99-DE1D1DB52FBE\:ABPerson" & @CRLF & _ "END:VCARD" & @CRLF & _ "BEGIN:VCARD" & @CRLF & _ "VERSION:3.0" & @CRLF & _ "N:Doe;Jane;;;" & @CRLF & _ "FN:Jane Doe" & @CRLF & _ "ORG:Example.com Inc.;" & @CRLF & _ "TITLE:Another Imaginary test person" & @CRLF & _ "EMAIL;type=INTERNET;type=WORK;type=pref:johnDoe@example.org" & @CRLF & _ "TEL;type=WORK;type=pref:+1 617 555 1213" & @CRLF & _ "TEL;type=WORK:+1 (617) 555-1233" & @CRLF & _ "TEL;type=CELL:+1 781 555 1213" & @CRLF & _ "TEL;type=HOME:+1 202 555 1213" & @CRLF & _ "NOTE:Jane Doe has a long and varied history\, being documented on more police files that anyone else. Reports of her death are alas numerous." & @CRLF & _ "CATEGORIES:Work,Test group" & @CRLF & _ "X-ABUID:5AD380FD-B2DE-4261-BA99-DE1D1DB52FBE\:ABPerson" & @CRLF & _ "END:VCARD" 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