How can developers ensure consistent styling and functionality across multiple iframes in PHP without manually adjusting each iframe code snippet?

To ensure consistent styling and functionality across multiple iframes in PHP without manually adjusting each iframe code snippet, developers can create a centralized PHP file that contains the common styling and functionality. This file can then be included in each iframe source, ensuring that all iframes display the same styling and functionality without the need for manual adjustments.

// common.php
<?php
// Common styling and functionality for iframes
?>

// iframe1.php
<?php
include 'common.php';
// Additional iframe specific code
?>

// iframe2.php
<?php
include 'common.php';
// Additional iframe specific code
?>