What are the implications of not properly closing HTML elements within a PHP loop?

If HTML elements are not properly closed within a PHP loop, it can lead to malformed HTML structure, causing rendering issues and potentially breaking the layout of the webpage. To solve this issue, make sure to close all opened HTML elements within the loop before moving on to the next iteration.

<?php
for ($i = 0; $i < 5; $i++) {
    echo "<div>";
    echo "Iteration: " . $i;
    echo "</div>";
}
?>