How can one ensure that included PHP files are displayed correctly within a table column?

When including PHP files within a table column, it is important to ensure that the PHP code is properly executed and displayed within the HTML table cell. To achieve this, you can use the `ob_start()` and `ob_get_clean()` functions to capture the output of the included PHP file and then echo it within the table cell.

<?php
ob_start();
include 'included_file.php';
$included_content = ob_get_clean();
echo '<td>' . $included_content . '</td>';
?>