#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(.{3})(.{17})(.{17})(.{20})(.{20})(.{10})(.{6})(.{30})(.{8})(.{8})(.{17})(.{3})(.{10})(.{3})(.{10})(.{3})(.{15})(.{15})(.{30})(.{8})(.{17})(.{17})(.{2})(.{1})(.{10})(.{10})(.{10})(.{10})(.{10})(.{15})(.{15})(.{30})(.{30})(.{17})(.{17})(.{35})"
Local $sString = "PRS00000001 00000999 F9A40A 992419 0000000001 8111437440 201602152016021500000000000000.00 3333333333 b1234567 SNAB111111GCVB2PO34567 0011111 0055555 DEN4444444444 5555555555 REG1111 REG2222 TRANID1 " & @CRLF & _
"PRS00000001 00000999 F9A40A 992419 0000000001 8111437440 201602152016021500000000000000.00 3333333333 b1234567 SNBB222222222ZZPO34567 0011111 0055555 DEN4444444444 5555555555 REG1111 REG2222 TRANID2 " & @CRLF & _
"PRS00000001 00000999 C7973A 992419 0000000001 8111437440 201602152016021500000000000000.00 3333333333 b1234567 SNCC3WDDDDDD123PO34567 0011111 0055555 DEN4444444444 5555555555 REG1111 REG2222 TRANID3 " & @CRLF & _
"PRS00000001 00000999 C7973A 992419 0000000001 8111437440 201602152016021500000000000000.00 3333333333 b1234567 SNDDDDD4R6F1111PO34567 0011111 0055555 DEN4444444444 5555555555 REG1111 REG2222 TRANID4 "
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH)
; Present the entire match result
_ArrayDisplay($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