How can PHP be used effectively in conjunction with JavaScript to achieve desired frameset behavior without compromising security?

To achieve desired frameset behavior without compromising security, PHP can be used to dynamically generate JavaScript code based on server-side logic. This allows for secure manipulation of frames and prevents potential security vulnerabilities.

<?php
// PHP code to dynamically generate JavaScript for frameset behavior
$frameSource = "http://example.com/frame1.php";
$frameName = "frame1";

echo "<script>";
echo "var frame = document.createElement('iframe');";
echo "frame.src = '$frameSource';";
echo "frame.name = '$frameName';";
echo "document.body.appendChild(frame);";
echo "</script>";
?>