WARNING: mysqli_connect(): (HY000/3159): Disallowing connections using insecure transport when --require_secure_transport=ON

Question

For a project, I'm trying to make an application where users can enter their values, but when I test it on localhost I keep getting this error: warning: mysqli_connect(): (HY000/ 3159): Disable transmission when using an insecure connection --require_secure_transport=ON. This is my php code:

$bedrijfsnaam = $_POST['bedrijfsnaam'];
    $dag = $_POST['dag'];
    $caption = $_POST['caption'];

    var_dump($bedrijfsnaam, 
             $dag, 
             $caption);

    $dbh = mysqli_connect(hostname: $host, 
                          username: $username, 
                          password: $password,
                          database: $dbname);

    if (mysqli_connect_errno()) {
        die("Connection error: " . mysqli_connect_errno());
    }

    $sql = "INSERT INTO file_upload (bedrijfsnaam, dag, caption)
    VALUES (?, ?, ?)"; 
    $stmt = mysqli_stmt_init($conn);

Is there a secure way to fix this error since the project must be released and from what I understand it is not safe to turn off secure_transport.

I tried using another external database, which resulted in another error, the connection was actively refused. This code does work because I tried running it on localhost and it does work

Answer 1

You need to call [mysqli_real_connect][1] and pass in the $mysqli instance as a parameter

$mysqli = mysqli_init();
        if (!$mysqli) {
            die('mysqli_init failed');
        }

        $mysqli->ssl_set(
            '/path/to/client-key.pem',
            '/path/to/client-cert.pem',
            '/path/to/ca-cert.pem',
            NULL,
            NULL
        ); //any paths here will work

        if (!$mysqli->options(MYSQLI_INIT_COMMAND, 'SET AUTOCOMMIT = 0')) {
            die('Setting MYSQLI_INIT_COMMAND failed');
        }

        if (!$mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 5)) {
            die('Setting MYSQLI_OPT_CONNECT_TIMEOUT failed');
        }

Then passed to mysqli_real_connect

$dbh = mysqli_real_connect(mysql:$mysqli, hostname: $host, 
                          username: $username, 
                          password: $password,
                          database: $dbname);


  [1]: https://www.w3schools.com/Php/func_mysqli_real_connect.asp