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 $sRegex = "(?m)(^[\s]*[-+]?[0-9]*?\.?[0-9]+([eE][-+]?[0-9]+)?[\s]*$|^[\s]*[-+]?[0-9]+\.?[\s]*$)" Local $sString = "0" & @CRLF & _ "0." & @CRLF & _ "0.0" & @CRLF & _ "0.00" & @CRLF & _ "0.0e0" & @CRLF & _ "0.0e-0" & @CRLF & _ "0.0e+0 " & @CRLF & _ "+0 " & @CRLF & _ "+0. " & @CRLF & _ "+0.0" & @CRLF & _ "+0.00" & @CRLF & _ "+0.0e0" & @CRLF & _ "+0.0e-0" & @CRLF & _ "+0.0e+0" & @CRLF & _ "-0 " & @CRLF & _ "-0." & @CRLF & _ "-0.0" & @CRLF & _ "-0.00" & @CRLF & _ "-0.0e0" & @CRLF & _ "-0.0e-0" & @CRLF & _ "-0.0e+0" & @CRLF & _ "1." & @CRLF & _ "2." & @CRLF & _ "3." & @CRLF & _ "4." & @CRLF & _ "-1." & @CRLF & _ "-2." & @CRLF & _ "-3." & @CRLF & _ "-4." & @CRLF & _ ".1" & @CRLF & _ ".2" & @CRLF & _ ".3" & @CRLF & _ ".4" & @CRLF & _ "-.1" & @CRLF & _ "-.2" & @CRLF & _ "-.3" & @CRLF & _ "-.4" & @CRLF & _ "1.0" & @CRLF & _ "3.0" & @CRLF & _ "4.0" & @CRLF & _ "5.0" & @CRLF & _ "-1.0" & @CRLF & _ "-2.0" & @CRLF & _ "-3.0" & @CRLF & _ "-4.0" & @CRLF & _ "-5.0" & @CRLF & _ "5.0123456" & @CRLF & _ "-5.012345678" & @CRLF & _ "-1" & @CRLF & _ "10" & @CRLF & _ "-10" & @CRLF & _ "10.0" & @CRLF & _ "-10.0" & @CRLF & _ "-10.01234" & @CRLF & _ "10.01234" & @CRLF & _ "0" & @CRLF & _ "1" & @CRLF & _ "01" & @CRLF & _ "001" & @CRLF & _ " 1 " & @CRLF & _ "" & @CRLF & _ "Ne doit pas être validé" & @CRLF & _ "" & @CRLF & _ "." & @CRLF & _ "1.." & @CRLF & _ ".1." & @CRLF & _ "..1" & @CRLF & _ "toto" & @CRLF & _ "1a" & @CRLF & _ "a1" & @CRLF & _ "a1a" & @CRLF & _ "1 a" & @CRLF & _ "a 1" & @CRLF & _ "a 1 a" & @CRLF & _ "-.1." & @CRLF & _ "+.1." 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