Regular Expressions 101

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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 $sRegex = "(?m)^(?=\d{2}([-\/])\d{2}(?:\1)\d{4})(?:((?:(?:0[13578]|1[02])[-\/](?:0[1-9]|[1-2]\d|3[01])|(?:0[469]|11)[-\/](?:0[1-9]|[1-2]\d|30)|02[-\/](?:0[1-9]|[1-2]\d))[-\/])(?:19\d{2}|200[0-4])|(?!09[-\/](?:19|2|3)|1)(?-1)2005)$" Local $sString = "MATCH:" & @CRLF & _ "09/18/2005" & @CRLF & _ "08/05/2004" & @CRLF & _ "01/01/2000" & @CRLF & _ "01/02/1934" & @CRLF & _ "09-18-2005" & @CRLF & _ "12/13/2000" & @CRLF & _ "12/31/2000" & @CRLF & _ "12-31-2000" & @CRLF & _ "11/30/2000" & @CRLF & _ "02/28/2002" & @CRLF & _ "02/29/2002" & @CRLF & _ "04-30-2005" & @CRLF & _ "06/04/1987" & @CRLF & _ "10/23/1999" & @CRLF & _ "02/25/2004" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "NO MATCH:" & @CRLF & _ "01/01/2006" & @CRLF & _ "09/19/2005" & @CRLF & _ "09/25/2005" & @CRLF & _ "09-19-2005" & @CRLF & _ "09-18/2005" & @CRLF & _ "09/18-2005" & @CRLF & _ "10/20/2005" & @CRLF & _ "08/34/2004" & @CRLF & _ "01/00/2000" & @CRLF & _ "00/01/2000" & @CRLF & _ "001/01/2000" & @CRLF & _ "01/001/2000" & @CRLF & _ "13/14/2000" & @CRLF & _ "12/32/2000" & @CRLF & _ "11/31/2000" & @CRLF & _ "11/30/ 2000" & @CRLF & _ "01/02/1834" & @CRLF & _ "02/30/2002" & @CRLF & _ "04-31-2005" & @CRLF & _ "09/18/2023" & @CRLF & _ "06/23/2008" & @CRLF & _ "04/03/2026" 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