PHP datebase

<?php include_once 'blocks/bd.php'; ?>

//bd.php
<?php

    $dbServerName = "localhost";
    $dbUserName = "root";
    $dbPassword = "";
    $dbName = "testing";

    $conn = mysqli_connect($dbServerName, $dbUserName, $dbPassword, $dbName);

if (!$conn) {
    echo "Ошибка: Невозможно установить соединение с MySQL." . PHP_EOL;
    echo "Код ошибки errno: " . mysqli_connect_errno() . PHP_EOL;
    echo "Текст ошибки error: " . mysqli_connect_error() . PHP_EOL;
    exit;
    }

echo "Соединение с MySQL установлено!" . PHP_EOL;

?>

//index.php gettin rows from db
<?php
    $sql = "SELECT * FROM users;";
    $result = mysqli_query($conn, $sql);
    $resultCheck = mysqli_num_rows($result);
    if ($resultCheck>0) {
        while ($row = mysqli_fetch_assoc($result)) {
        echo $row['name'];
        }
    }

?>