How can JavaScript be integrated with PHP to control iFrame visibility?

To control iFrame visibility using JavaScript integrated with PHP, you can use PHP to output JavaScript code that manipulates the iFrame visibility based on certain conditions. This can be achieved by setting a PHP variable that determines whether the iFrame should be visible or not, and then outputting JavaScript code that changes the iFrame's display property accordingly.

<?php
// Set a PHP variable to determine iFrame visibility
$showIframe = true;

// Output JavaScript code to control iFrame visibility
echo '<script>';
echo 'if (' . $showIframe . ') {';
echo 'document.getElementById("myIframe").style.display = "block";';
echo '} else {';
echo 'document.getElementById("myIframe").style.display = "none";';
echo '}';
echo '</script>';
?>