#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?si)((?<=Project )\d{0,2}).*?(FOAH|PRJ)(\d{1,10})"
Local $sString = "C:\temp\TimeSheet\11-06-2017.txt:1:11/06/2017 18:45:56 - This 15 minutes is dedicated to PROJECT 100 FOAH18" & @CRLF & _
"C:\temp\TimeSheet\11-06-2017.txt:2:11/06/2017 18:45:58 - This 15 minutes is dedicated to PROJECT 90 FOAH278 " & @CRLF & _
"C:\temp\TimeSheet\11-06-2017.txt:3:11/06/2017 18:45:59 - This 15 minutes is dedicated to PROJECT 80 FOAH313 " & @CRLF & _
"C:\temp\TimeSheet\11-06-2017.txt:4:11/06/2017 18:46:00 - This 15 minutes is dedicated to PROJECT 70 PRJ0031905 " & @CRLF & _
"C:\temp\TimeSheet\11-06-2017.txt:5:11/06/2017 18:46:02 - This 15 minutes is dedicated to PROJECT 60 PRJ0031909 C:\temp\TimeSheet\11-06-2017.txt:6:11/06/2017 18:46:03 - This 15 minutes is dedicated to PROJECT 50 PRJ0032045"
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