WordPress Version: 5.4
/**
* Adds an additional class to the browser nag if the current version is insecure.
*
* @since 3.2.0
*
* @param string[] $classes Array of meta box classes.
* @return string[] Modified array of meta box classes.
*/
function dashboard_browser_nag_class($classes)
{
$response = wp_check_browser_version();
if ($response && $response['insecure']) {
$classes[] = 'browser-insecure';
}
return $classes;
}