function readFromFile($fileName,&$arrOutPut){
    $handle = @fopen($fileName, "r");
    if ($handle) {
        while (!feof($handle)) {
            $buffer = fgets($handle, 4096);
            $arrOutPut[] = $buffer ;
        }
        fclose($handle);
    }
}

readFromFile("./xxx.list",$arrData);