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 $sRegex = "(?m)^([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31))(?<!127)(?<!^10)(?<!^0)\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!192\.168)(?<!172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31))\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!\.255$)$" Local $sString = "# Invalid IPs:" & @CRLF & _ "999.999.999.999." & @CRLF & _ "108.0.0.01" & @CRLF & _ "0.1.2.3" & @CRLF & _ "00.0000.00.00" & @CRLF & _ "192.168.l.1" & @CRLF & _ "912.456.123.123" & @CRLF & _ ".3.3.3.0" & @CRLF & _ "192.168.o.0" & @CRLF & _ "" & @CRLF & _ "# Local IPs:" & @CRLF & _ "172.16.0.9" & @CRLF & _ "172.16.4.1" & @CRLF & _ "172.17.1.1" & @CRLF & _ "127.0.0.2" & @CRLF & _ "10.0.1.5" & @CRLF & _ "10.0.0.1" & @CRLF & _ "10.155.155.155" & @CRLF & _ "10.255.255.254" & @CRLF & _ "172.16.0.4" & @CRLF & _ "172.16.0.1" & @CRLF & _ "172.17.1.1" & @CRLF & _ "172.31.254.254" & @CRLF & _ "192.168.1.2" & @CRLF & _ "192.168.254.0" & @CRLF & _ "169.254.2.2" & @CRLF & _ "" & @CRLF & _ "# Broadcast IPs:" & @CRLF & _ "60.123.247.255" & @CRLF & _ "196.168.255.255" & @CRLF & _ "10.255.255.255" & @CRLF & _ "192.168.255.255" & @CRLF & _ "" & @CRLF & _ "# Public IPs:" & @CRLF & _ "8.8.8.8" & @CRLF & _ "8.8.4.4" 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