How can a PHP developer ensure a seamless integration of PHP calculations with HTML and CSS for dynamic text layout adjustments on a webpage?

To ensure a seamless integration of PHP calculations with HTML and CSS for dynamic text layout adjustments on a webpage, a PHP developer can use PHP to calculate the necessary values and then output them directly into the HTML using inline PHP or by assigning the values to HTML elements with unique IDs. CSS can then be used to style these elements based on the calculated values.

<?php
// Calculate the dynamic text size based on some logic
$textSize = 20; // This value can be calculated dynamically

// Output the calculated text size into a style attribute in HTML
echo '<div style="font-size: ' . $textSize . 'px;">Dynamic Text</div>';
?>