How can the security implications of using Iframe links in PHP be addressed and mitigated?

When using Iframe links in PHP, one potential security risk is the possibility of cross-site scripting (XSS) attacks if the Iframe content is not properly sanitized. To address this, you can implement input validation and output escaping to ensure that any user input displayed within the Iframe is safe and does not contain malicious code.

// Sanitize the Iframe link before displaying it
$iframeLink = filter_var($_GET['iframe_link'], FILTER_SANITIZE_URL);

// Output the Iframe link with escaping
echo '<iframe src="' . htmlspecialchars($iframeLink) . '"></iframe>';