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

/
/
g

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 = "([^%>\s]+)" Local $sString = "51.23%" & @CRLF & _ "17.84%" & @CRLF & _ "72.31%" & @CRLF & _ "59.31%" & @CRLF & _ "64.48%" & @CRLF & _ "0.19%" & @CRLF & _ "1.13%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "32.18%" & @CRLF & _ "0.00%" & @CRLF & _ "11.68%" & @CRLF & _ "35.60%" & @CRLF & _ "10.36%" & @CRLF & _ "0.00%" & @CRLF & _ "50.99%" & @CRLF & _ "84.03%" & @CRLF & _ "2.96%" & @CRLF & _ "47.17%" & @CRLF & _ "57.53%" & @CRLF & _ "> 90%" & @CRLF & _ "64.49%" & @CRLF & _ "59.04%" & @CRLF & _ "85.09%" & @CRLF & _ "74.25%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "85.00%" & @CRLF & _ "16.13%" & @CRLF & _ "35.09%" & @CRLF & _ "12.14%" & @CRLF & _ "0.00%" & @CRLF & _ "54.82%" & @CRLF & _ "86.50%" & @CRLF & _ "0.00%" & @CRLF & _ "77.30%" & @CRLF & _ "0.15%" & @CRLF & _ "46.89%" & @CRLF & _ "89.56%" & @CRLF & _ "34.88%" & @CRLF & _ "" & @CRLF & _ "0.00%" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "4.66%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "24.49%" & @CRLF & _ "28.44%" & @CRLF & _ "" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "2.17%" & @CRLF & _ "41.77%" & @CRLF & _ "11.59%" & @CRLF & _ "0.00%" & @CRLF & _ "26.14%" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "0.90%" & @CRLF & _ "> 90%" & @CRLF & _ "73.00%" & @CRLF & _ "15.18%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" & @CRLF & _ "7.41%" & @CRLF & _ "> 90%" & @CRLF & _ "> 90%" & @CRLF & _ "63.89%" & @CRLF & _ "89.58%" & @CRLF & _ "75.06%" & @CRLF & _ "85.52%" & @CRLF & _ "59.10%" & @CRLF & _ "38.19%" & @CRLF & _ "44.98%" & @CRLF & _ "83.05%" & @CRLF & _ "35.33%" & @CRLF & _ "62.60%" & @CRLF & _ "> 90%" & @CRLF & _ "> 90%" & @CRLF & _ "15.05%" & @CRLF & _ "0.00%" & @CRLF & _ "> 90%" & @CRLF & _ "15.21%" & @CRLF & _ "0.00%" & @CRLF & _ "7.26%" & @CRLF & _ "0.00%" & @CRLF & _ "0.00%" 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