Untitled

<html lang="pl">
<head>
    <meta charset="utf8">
    <title>bruh</title>

    <meta http-equiv="X-Ua-Compatible" content="IE=edge">
    <link rel="sylesheet" href="main.css">

</head>
<body>
<?php
    require_once "dbconnect.php";
    $conn = new mysqli($host, $user, $pass, $db);
    $conn->set_charset("utf8");
    $x = "SELECT id, nazwa FROM klasa";
    $wynik = $conn->query($x);
    $ile = $wynik->num_rows;
    echo $ile;
?>
</body>