What are some alternative methods to using frames for displaying content in PHP?

Using frames in PHP for displaying content can lead to issues with SEO, accessibility, and overall user experience. Instead, a better approach is to use PHP includes or templates to separate the content into reusable components that can be easily managed and displayed on different pages.

<?php
// content.php
$content = "This is the content to be displayed.";

// header.php
include 'header.php';

// navigation.php
include 'navigation.php';

// sidebar.php
include 'sidebar.php';

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