Select Data (MySQLi Object-oriented)

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, name, age FROM addd";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "<tr><td>".$row['news_id']."</td>";
        echo "<td>".$row['news_title']."</td>";
        echo "<td>".$row['news_content']."</td>";
        echo "<td>".$row['news_author']."</td>";
        echo "<td><a href='news-edit.php?id=".$row['id']."'>Edit</a></td>";
        echo "<td><a href='news-delete.php?id=".$row['id']."'>x</a></td><tr>";
    }
} else {
    echo "0 results";
}
$conn->close();
?>