How can PHP variables be integrated into HTML code for dynamic content display?

To integrate PHP variables into HTML code for dynamic content display, you can simply echo the variable within the HTML code using the PHP echo statement. This allows you to dynamically insert the value of the variable into the HTML output.

<?php
// Define a PHP variable
$name = "John";

// Integrate the variable into HTML code
echo "<p>Welcome, $name!</p>";
?>