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
No Match

/
/
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)^rgba?\((?:(?:(?:[0-9]{1,3} ){2}[0-9]{1,3}|(?:[0-9]{1,3}% ){2}[0-9]{1,3}%)(?: \/ (?:[0-9]{1,3}%|1|0|0?\.[0-9]+))?|(?:(?:[0-9]{1,3}, ){2}[0-9]{1,3}|(?:[0-9]{1,3}%, ){2}[0-9]{1,3}%)(?:, (?:[0-9]{1,3}%|1|0|0?\.[0-9]+))?)\)$" Local $sString = "// invalid" & @CRLF & _ "rgb()" & @CRLF & _ "rgba()" & @CRLF & _ "rgb(123)" & @CRLF & _ "rgb(11 22 )" & @CRLF & _ "rgb(11 22 2 / 03)" & @CRLF & _ "rgb(11 22 2 / 10)" & @CRLF & _ "rgb(1 2 3 / 0.34%)" & @CRLF & _ "rgb(11% 22 33)" & @CRLF & _ "rgb(111 222% 333)" & @CRLF & _ "rgb(1 22 333 )" & @CRLF & _ "rgb(1 2 3, 1)" & @CRLF & _ "rgb(1 2, 3 / 1)" & @CRLF & _ "// valid" & @CRLF & _ "rgb(111 22 333)" & @CRLF & _ "rgb(1 2 3)" & @CRLF & _ "rgb(11 22 33)" & @CRLF & _ "rgb(111 222 333)" & @CRLF & _ "rgb(1 22 333)" & @CRLF & _ "rgb(1 2 3 / 1)" & @CRLF & _ "rgb(11 22 2 / 0)" & @CRLF & _ "rgb(1 2 3 / 0.34)" & @CRLF & _ "rgb(1 2 3 / .34)" & @CRLF & _ "rgb(1 2 3 / 0.34)" & @CRLF & _ "rgb(1 2 3 / 1%)" & @CRLF & _ "rgb(1 2 3 / 10%)" & @CRLF & _ "rgb(1 2 3 / 100%)" & @CRLF & _ "rgb(11 22 2 / 0%)" & @CRLF & _ "rgb(1 2 3 / 34%)" & @CRLF & _ "rgb(1 2 3 / 4%)" & @CRLF & _ "rgb(111 22 333)" & @CRLF & _ "rgb(1% 2% 3%)" & @CRLF & _ "rgb(11% 22% 2% / 0)" & @CRLF & _ "rgb(12%, 0%, 100%)" & @CRLF & _ "rgb(111, 22, 333)" & @CRLF & _ "rgb(1, 2, 3)" & @CRLF & _ "rgb(1, 2, 3, 1)" & @CRLF & _ "" & @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