What are some best practices for structuring a webpage with a header, left column, and right column using PHP?

When structuring a webpage with a header, left column, and right column using PHP, it is best to separate the different sections into separate files for better organization and maintainability. You can use PHP include statements to include the header, left column, and right column files in your main webpage file. This way, each section can be easily updated or modified without affecting the rest of the page.

<?php include 'header.php'; ?>

<div class="container">
    <div class="left-column">
        <?php include 'left_column.php'; ?>
    </div>
    
    <div class="right-column">
        <?php include 'right_column.php'; ?>
    </div>
</div>

<?php include 'footer.php'; ?>