#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?mi)^([a-zA-Z]{1,2}\d{1,2}[a-zA-Z]{0,2})\s*?(\d[a-zA-Z]{2})$"
Local $sString = "m20 5qj" & @CRLF & _
"BS3 1JP" & @CRLF & _
"bs3 1jp" & @CRLF & _
"m5 8wa" & @CRLF & _
"m205qj" & @CRLF & _
"Bs31JP" & @CRLF & _
"" & @CRLF & _
"http://en.wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#Validation" & @CRLF & _
"" & @CRLF & _
"AA9A 9AA" & @CRLF & _
"A9A 9AA" & @CRLF & _
"A9 9AA" & @CRLF & _
"A99 9AA" & @CRLF & _
"AA9 9AA" & @CRLF & _
"AA99 9AA" & @CRLF & _
"" & @CRLF & _
"aa9A9AA" & @CRLF & _
"A9A9AA" & @CRLF & _
"A99AA" & @CRLF & _
"A999AA" & @CRLF & _
"AA99AA" & @CRLF & _
"AA999AA"
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