I dont understand what making error:
E:\Setup\Autoit\test.au3 (30) : ==> Array variable has incorrect number of subscripts or subscript dimension range exceeded.:
Plz fix for me 
List.txt
script:
AutoIt
#include <Array.au3> Func readfile($fname) Local $file = FileOpen($fname, 0) If $file = -1 Then MsgBox(0, "Error", "Unable to open " & $fname) Exit EndIf Local $data = "" While 1 Local $chars = FileRead($file, 1) If @error = -1 Then ExitLoop $data &= $chars WEnd Return $data EndFunc Func getDomain($url) Local $urlArr = StringSplit($url,"/",2) If UBound($urlArr) >=2 Then Local $domain = $urlArr[2] return $domain EndIf EndFunc Func filterDomain($arr) Local $total = UBound($arr) For $i = $total - 1 To 0 Step -1 $domain = getDomain($arr[$i]) ; Error here .............. For $j = $i - 1 To 0 Step -1 if $domain == getDomain($arr[$j]) Then _ArrayDelete($arr,$j) _ArraySort($arr) $total -= 1 $j -= 1 EndIf Next Next Return $arr EndFunc $tempListArr = StringSplit(readfile("List.txt"),@CR) _ArrayDelete($tempListArr,0) ;_ArrayDisplay($tempListArr) $arrSite = filterDomain($tempListArr) _ArrayDisplay($arrSite)