$error = array();
		$nome = isset($_POST['nome']) ? trim($_POST['nome']) : '';
		if (empty($nome)) {
			$error[] = urlencode('campo nome obbligatorio');
		}
		$cognome = isset($_POST['cognome']) ? trim($_POST['cognome']) : '';
		if(empty($cognome)){
			$error[] = urlencode('campo cognome obbligatorio');
		}

		$civico = isset($_POST['civico']) ? trim($_POST['civico']) : '';

		$citta = isset($_POST['citta']) ? trim($_POST['citta']) : '';

		$prov = isset($_POST['prov']) ? trim($_POST['prov']) : '';

		if($_POST){

		// get latitude, longitude and formatted address
		$data_arr = geocode($_POST['indirizzo']);

		// if able to geocode the address
		if($data_arr){

        $lat = $data_arr[0];
        $lon = $data_arr[1];
        $formatted_address = $data_arr[2];

		$lat = isset($_POST['lat']) ? trim($_POST['lat']) : '';

		$lon = isset($_POST['lon']) ? trim($_POST['lon']) : '';

		}else{
			echo "you are back to full circle again";
		}

		function geocode($indirizzo){

		$indirizzo = isset($_POST['indirizzo']) ? urlencode($indirizzo) : '';

		$url = "http://maps.google.com/maps/api/geocode/json?sensor=false&address={$indirizzo}";

		$resp_json = file_get_contents($url);

		$resp = json_decode($resp_json, true);                                           if($resp['status']='OK'){
				$lati = $resp['results'][0]['geometry']['location']['lat'];
				$longi = $resp['results'][0]['geometry']['location']['lng'];
				$formatted_address = $resp['results'][0]['formatted_address'];
				// verify if data is complete
				if($lati && $longi && $formatted_address){

					// put the data in the array
					$data_arr = array();

					array_push(
						$data_arr,
							$lati,
							$longi,
							$formatted_address
						);

					return $data_arr;

					$stmt = $dbh->prepare("UPDATE tagesroma SET nome=?, cognome=?, indirizzo=?, civico=?, citta=?, prov=?, lat=?, lon=? WHERE id=?"); // changed to WHERE id=?
						$stmt->execute(array($nome, $cognome, $indirizzo, $civico, $citta, $prov, $lati, $longi, $_GET["id"])); // added $_GET["id"] to the end

					}else{
						return false;
					}
					}else{
						return false;
					}
		}