#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?m)^(((0)|([1-9]\d?)|(1\d\d)|(2[0-5]{2}))\.?){0,3}((0)|([1-9]\d?)|(1\d\d)|(2[0-5]{2}))?$"
Local $sString = "255.255.255.255" & @CRLF & _
"192.168.0.1" & @CRLF & _
"0.0.0.0" & @CRLF & _
"192.168.0." & @CRLF & _
"192.168.0" & @CRLF & _
"192.1" & @CRLF & _
"0" & @CRLF & _
"33.33.33.33" & @CRLF & _
"2.2.99" & @CRLF & _
"" & @CRLF & _
"255.255.255.255." & @CRLF & _
"192.168.0.270" & @CRLF & _
"0.0.0.a" & @CRLF & _
"255.255.255. 255" & @CRLF & _
"192.168.0.." & @CRLF & _
"0.0.00.0"
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