How can JavaScript be integrated into PHP scripts for functionalities like automatic link opening after email sending?

To integrate JavaScript into PHP scripts for functionalities like automatic link opening after email sending, you can use PHP to output JavaScript code within the HTML response. This can be achieved by echoing JavaScript code within PHP tags in the HTML output.

<?php
// PHP code for sending email

// Send email code here

// Output JavaScript code to automatically open a link after email sending
echo '<script type="text/javascript">
        window.onload = function() {
            window.open("https://example.com", "_blank");
        }
      </script>';
?>