$news_t=array(
                "titolo"=>$_POST["titolo"],
                "autore"=>$_POST["autore"],
                "contenuto"=>$_POST["contenuto"],
                "generi"=>$_POST["generi"],
                "data_creazione"=>$_POST["data_creazione"]
            );

            $file=fopen("array.txt", "w");
            for($i=0;$i<count($news_array);$i++) {
                $out="";
                if($i!=$indice)
                    foreach ($news_array[$i] as $key => $value)
                        $out.=$value."|";

                else
                    foreach ($news_t as $key => $value)
                        $out.=$value."|";

                $out=substr($out, 0,-1)."\n";
                fwrite($file,$out);
            }

            fclose($file);
            header("Location:index.php");