How can PHP be utilized to dynamically update and save CSS properties of elements based on user interactions like dragging and dropping?

To dynamically update and save CSS properties of elements based on user interactions like dragging and dropping, you can use AJAX to send the updated CSS values to a PHP script which then saves them to a database or file. The PHP script can then retrieve these values and apply them to the elements on the page. 

<?php
// Retrieve the CSS values sent via AJAX
$css_property_1 = $_POST['css_property_1'];
$css_property_2 = $_POST['css_property_2'];

// Save the CSS values to a file or database
$fp = fopen('css_values.txt', 'w');
fwrite($fp, "CSS Property 1: $css_property_1\n");
fwrite($fp, "CSS Property 2: $css_property_2\n");
fclose($fp);

// Apply the CSS values to the elements on the page
echo "<style>
        .element {
            property-1: $css_property_1;
            property-2: $css_property_2;
        }
      </style>";
?>

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