#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?!<[^>]*?>)\bhello world\b(?![^<]*?(?:</[^/]*>|>))"
Local $sString = "one two three hello world four five" & @CRLF & _
"" & @CRLF & _
"one <a href='index.html'> hello world </a> four five" & @CRLF & _
"" & @CRLF & _
"foo bar <p>hello world</p> hello" & @CRLF & _
"" & @CRLF & _
"<p name="hello world">hello world</p>" & @CRLF & _
"" & @CRLF & _
"one two three <img alt='hello world' \>four five" & @CRLF & _
"<img alt="hello world"> foo " & @CRLF & _
"" & @CRLF & _
"foo bar <a href="index.html">hello world</a> again" & @CRLF & _
"" & @CRLF & _
"one two three hello world four five" & @CRLF & _
"" & @CRLF & _
"one two three <img alt='hello world' \>four five"
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