Output MySQLi recordset in a 3 column format

Question

Here is my recordset, but that's all the farther I can get. I modified this code that I found, and it does output the artists, but all on one line - not in a 3 column format.

    <?php
$result = mysqli_query($demo, "SELECT * FROM wp_posts WHERE post_type = 'artist' ORDER BY post_title ASC;");
$wp_posts = array();
while ($row = mysqli_fetch_array($result)) {
    $wp_posts[] = $row;
}
?>

    <tr>
        <?php for ($i = 0; $i < 50; $i++): ?>
        <td>
            <?php if (isset($wp_posts[$i])): ?>
          <a href="http://localhost/mystor/qgm.php?loc=<?php echo $wp_posts[$i]['ID']; ?>" title=""><?php echo $wp_posts[$i]['post_title']; ?></a>
            <?php else: ?>
            &nbsp;
            <?php endif; ?>
        </td>
        <?php endfor; ?>
  </tr>
</table>```

Thanks.