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
No Match

/
/
img

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 $sRegex = "(?im)^.*(po\s*box|private\s*bag).*$|^\d[\/a-zĀ-ū0-9\s\,\'\-]*$" Local $sString = "Street address:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "224B Clarence Street, Vogeltown, Wellington 6023" & @CRLF & _ "" & @CRLF & _ "Rural address:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "128 Valley Road North, RD 2, Middlemarch 9597" & @CRLF & _ "" & @CRLF & _ "PO Box:" & @CRLF & _ "¯¯¯¯¯¯¯" & @CRLF & _ "PO Box 17999, Greenlane, Auckland 1546" & @CRLF & _ "" & @CRLF & _ "Street – with unit:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "3/123 Johnstone Street West, Point Chevalier, Auckland 1022" & @CRLF & _ "" & @CRLF & _ "Rural address with unit:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "8/56 Maple Boulevard, RD 2, Wanaka 9382" & @CRLF & _ "" & @CRLF & _ "Private Bag:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "Private Bag 93899, Auckland 0753" & @CRLF & _ "" & @CRLF & _ "Street – with building name:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "Level 2 Colombo House, 3A/1222 Colombo Street, St Albans, Christchurch 8014" & @CRLF & _ "" & @CRLF & _ "Rural address – with building name:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "Totârä Farm, 2/12543 Farm Road, RD 1, Outram 9073" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "Other addresses around the world:" & @CRLF & _ "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯" & @CRLF & _ "813 Howard Street, Oswego, NY 13126, USA" & @CRLF & _ "1 Beacon Street, 33rd Floor, Boston, MA 02108, USA" & @CRLF & _ "Hagagatan 1 vi, SE-113 49 Stockholm, Sweden" & @CRLF & _ "John A. Smith, ACME Innovations Inc., PO BOX 1033, Los Angeles, CA" & @CRLF & _ "c/o Henry Roth, 50 Oakland Ave,#206, A City, Florida, 32104, USA" & @CRLF & _ "10 Downing Street, London, Greater London, SW1A 2AA, United Kingdom" & @CRLF & _ "Av. de Senalèche 27, 1009 Pully, Switzerland" & @CRLF & _ "17, Rue Bergère, 75009 Paris, France" & @CRLF & _ "11 Bis Av. Gabriel Péri, 38150 Roussillon, France" & @CRLF & _ "Apostel-Paulus-Strasse 7, 10823 Berlin, Deutschland" & @CRLF & _ "" 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