function wp_maintenance_mode() {

if (!current_user_can(‘edit_themes’) || !is_user_logged_in()) {
wp_die(‘<h1>.</h1><br />’);
}
}
add_action(‘get_header’, ‘wp_maintenance_mode’);<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/doc/www.vysokyvrch.sk/www/wp-content/themes/et-agency/functions.php:1) in <b>/www/doc/www.vysokyvrch.sk/www/wp-includes/pluggable.php</b> on line <b>1335</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/doc/www.vysokyvrch.sk/www/wp-content/themes/et-agency/functions.php:1) in <b>/www/doc/www.vysokyvrch.sk/www/wp-includes/pluggable.php</b> on line <b>1338</b><br />