How can frames be used to incorporate PHP functionality into HTML pages?

Frames can be used to incorporate PHP functionality into HTML pages by creating a separate PHP file that contains the dynamic content or functionality you want to include. Then, you can use a frame in your HTML page to display the PHP file within a designated area. This allows you to have a mix of static HTML content and dynamic PHP content on the same page. ```html <!DOCTYPE html> <html> <head> <title>Using Frames to Incorporate PHP</title> </head> <frameset cols="25%,75%"> <frame src="menu.php" name="menu"> <frame src="content.php" name="content"> </frameset> </html> ```