Untitled

<html>
    <?php
        if($_SERVER['QUERY_STRING']!=""){

            $utente = $_GET ['utente'];
            $pass = $_GET['password'];
            $passnuova = $_GET['nuovapassword'];
            $passripeti = $_GET['ripetipassword'];

            if($passnuova == $passripeti){

                $Link = mysqli_connect("IP", "xxx", "yyy", "zzz");//mi connetto al database

                if(!$Link){
                    echo "<head></head><body>";
                    echo "Error: Unable to connect to MySql".PHP_BOL."<br>";
                    echo "Debugging Errno: ".mysqli_connect_errno().PHP_BOL."<br>";
                    echo "Debugging Error: ".mysqli_connect_error().PHP_BOL."<br>";
                    echo"</body>";
                    die();
                    //die("error");
                }

                //echo "Connessione stabilita(Connection succesfully)";

                $queryString = "SELECT * FROM Utenti WHERE User='$utente' AND Password='$pass'";

                $accesso = mysqli_query($Link, $queryString);

                $numeroRighe = mysqli_num_rows($accesso);

                echo "<head>";
                if($numeroRighe == 1){
                    $queryStringModifica = "UPDATE Utenti SET password='$passnuova' WHERE User='$utente'";
                    $modifica = mysqli_query($Link, $queryStringModifica);

                    echo "<meta http-equiv='refresh' content ='3, url=AccediDatabase.php'>";
                }
                echo "</head><body>";

                if($numeroRighe == 1){
                    echo "Modifica Avvenuta <br>";
                }else{
                    echo "Modifica non avvenuta";
                    VisualizzaForm();
                }

                mysqli_close($Link);
                echo "</body>";

            }else{
                echo "password non coincidenti";
                VisualizzaForm();
            }
        }else{
            echo "<head></head><body>";
            VisualizzaForm();
            echo"</body>";
        }


    ?>
</html>

<?php
    function VisualizzaForm(){
        echo "<form action='ModificaPassword.php' method='get'>";
        echo "User: <input type = 'text' name= 'utente'><br>";
        echo "Password: <input type='password' name='password'><br>";
        echo "Nuova Password: <input type='password' name='nuovapassword'><br>";
        echo "Ripeti Password: <input type='password' name='ripetipassword'><br>";
        echo "<input type= 'submit' value='modificaPassword'><br>";
        echo "</form>";
    }
?>