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

/
/
g

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 = ".*images\/(?!cached).*" Local $sString = "./images/logos/partners/mastergen.png" & @CRLF & _ "./images/logos/partners/highland.png" & @CRLF & _ "./images/logos/partners/charollais.png" & @CRLF & _ "./images/logos/partners/grasstec.png" & @CRLF & _ "./images/logos/partners/stabiliser.png" & @CRLF & _ "./images/logos/services" & @CRLF & _ "./images/logos/services/farmpay-icon.png" & @CRLF & _ "./images/cached" & @CRLF & _ "./images/cached/.DS_Store" & @CRLF & _ "./images/cached/logo-farmpay-black.png" & @CRLF & _ "./images/cached/logo-green-text.svg" & @CRLF & _ "./images/cached/readme.md" & @CRLF & _ "./images/cached/logo-green-icon.svg" & @CRLF & _ "./images/cached/logo-green-icon.png" & @CRLF & _ "./images/cached/logo-farmpay-white.png" & @CRLF & _ "./images/cached/logo-white-text.svg" & @CRLF & _ "./images/cached/logo-green.png" & @CRLF & _ "./images/user" & @CRLF & _ "./images/user/.DS_Store" & @CRLF & _ "./images/user/shield.svg" & @CRLF & _ "./images/user/shield-error.svg" & @CRLF & _ "./images/user/test-delete.png" & @CRLF & _ "./images/user/locked-avatar.png" & @CRLF & _ "./images/user/unknown-avatar.png" & @CRLF & _ "./images/listing-photo-guides" & @CRLF & _ "./images/listing-photo-guides/goats" & @CRLF & _ "./images/listing-photo-guides/goats/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/goats/bad" & @CRLF & _ "./images/listing-photo-guides/goats/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/goats/good" & @CRLF & _ "./images/listing-photo-guides/goats/good/1.png" & @CRLF & _ "./images/listing-photo-guides/pigs" & @CRLF & _ "./images/listing-photo-guides/pigs/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/pigs/bad" & @CRLF & _ "./images/listing-photo-guides/pigs/bad/2.png" & @CRLF & _ "./images/listing-photo-guides/pigs/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/pigs/good" & @CRLF & _ "./images/listing-photo-guides/pigs/good/2.png" & @CRLF & _ "./images/listing-photo-guides/pigs/good/1.png" & @CRLF & _ "./images/listing-photo-guides/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/.DS_Store" & @CRLF & _ "images/listing-photo-guides/dairy-cattle/bad" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/bad/2.png" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/bad/3.png" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/good" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/good/2.png" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/good/3.png" & @CRLF & _ "./images/listing-photo-guides/dairy-cattle/good/1.png" & @CRLF & _ "./images/listing-photo-guides/sheep" & @CRLF & _ "./images/listing-photo-guides/sheep/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/sheep/bad" & @CRLF & _ "./images/listing-photo-guides/sheep/bad/4.png" & @CRLF & _ "./images/listing-photo-guides/sheep/bad/2.png" & @CRLF & _ "./images/listing-photo-guides/sheep/bad/3.png" & @CRLF & _ "./images/listing-photo-guides/sheep/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/sheep/good" & @CRLF & _ "./images/listing-photo-guides/sheep/good/4.png" & @CRLF & _ "./images/listing-photo-guides/sheep/good/2.png" & @CRLF & _ "./images/listing-photo-guides/sheep/good/3.png" & @CRLF & _ "./images/listing-photo-guides/sheep/good/1.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/bad" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/bad/4.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/bad/2.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/bad/3.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/good" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/good/4.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/good/2.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/good/3.png" & @CRLF & _ "./images/listing-photo-guides/breeding-cattle/good/1.png" & @CRLF & _ "./images/listing-photo-guides/store-cattle" & @CRLF & _ "./images/listing-photo-guides/store-cattle/.DS_Store" & @CRLF & _ "./images/listing-photo-guides/store-cattle/bad" & @CRLF & _ "./images/listing-photo-guides/store-cattle/bad/2.png" & @CRLF & _ "./images/listing-photo-guides/store-cattle/bad/1.png" & @CRLF & _ "./images/listing-photo-guides/store-cattle/good" & @CRLF & _ "./images/listing-photo-guides/store-cattle/good/2.png" & @CRLF & _ "./images/listing-photo-guides/store-cattle/good/1.png" & @CRLF & _ "./images/backgrounds" & @CRLF & _ "./images/backgrounds/auctions.jpg" & @CRLF & _ "./images/backgrounds/family-cows.jpg" & @CRLF & _ "./images/backgrounds/tablet-livestock.jpg" & @CRLF & _ "./images/backgrounds/dna-strand.jpg" & @CRLF & _ "./images/backgrounds/apps.jpg" & @CRLF & _ "./images/backgrounds/.DS_Store" & @CRLF & _ "./images/backgrounds/handshake-livestock.jpg" & @CRLF & _ "./images/backgrounds/cows.jpg" & @CRLF & _ "./images/backgrounds/sheep.jpg" & @CRLF & _ "./images/backgrounds/premium-seller.jpg" & @CRLF & _ "./images/backgrounds/handshake-trade.jpg" & @CRLF & _ "./images/backgrounds/haulage-trailer.jpg" & @CRLF & _ "./images/backgrounds/uk-map.png" & @CRLF & _ "./images/backgrounds/vet.jpg" & @CRLF & _ "./images/team" & @CRLF & _ "./images/team/kate-jones.jpg" & @CRLF & _ "./images/team/michelle-shores.jpg" & @CRLF & _ "./images/team/dan-luff.jpg" & @CRLF & _ "./images/team/.DS_Store" & @CRLF & _ "./images/team/sam-scott.jpg" & @CRLF & _ "./images/team/andrew-loftus.jpg" & @CRLF & _ "./images/team/ben-stanley.jpg" & @CRLF & _ "./images/team/rosie-hetherington.jpg" & @CRLF & _ "./images/team/derek-lewis.jpg" & @CRLF & _ "./images/team/peter-ellis.jpg" & @CRLF & _ "./images/team/andrew-huxham.jpg" & @CRLF & _ "./images/team/alex-crooks.jpg" & @CRLF & _ "./images/team/bertie-steggles.jpg" & @CRLF & _ "./images/team/jamie-mcinnes.jpg" & @CRLF & _ "./images/team/patrick-bidwell.jpg" & @CRLF & _ "./images/team/dave-rose.jpg" & @CRLF & _ "./images/team/becky-smith.jpg" & @CRLF & _ "./images/team/andrew-connon.jpg" & @CRLF & _ "./images/team/karen-johnson.jpg" & @CRLF & _ "./scss" & @CRLF & _ "./scss/config" & @CRLF & _ "./scss/config/_variables.scss" & @CRLF & _ "./scss/vendor.scss" & @CRLF & _ "./scss/components" & @CRLF & _ "./scss/components/blog.scss" & @CRLF & _ "./scss/components/button.scss" & @CRLF & _ "./scss/components/table.scss" & @CRLF & _ "./scss/components/forms.scss" & @CRLF & _ "./scss/components/layout.scss" & @CRLF & _ "./scss/components/tag.scss" & @CRLF & _ "./scss/components/tooltip.scss" & @CRLF & _ "./scss/components/typography.scss" & @CRLF & _ "./scss/components/animations.scss" & @CRLF & _ "./scss/components/utility.scss" & @CRLF & _ "./scss/components/loading.scss" & @CRLF & _ "./scss/app.scss" & @CRLF & _ "./native-app" & @CRLF & _ "./native-app/generated" & @CRLF & _ "./native-app/generated/.DS_Store" & @CRLF & _ "./native-app/generated/ios" & @CRLF & _ "./native-app/generated/ios/splash" & @CRLF & _ "./native-app/generated/ios/splash/Default-568h@2x~" 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