*/ use Friendica\Core\Hook; function helloaddon_install() { Hook::register('page_end', 'addon/helloaddon/helloaddon.php', 'helloaddon_page_end'); } function helloaddon_uninstall() { Hook::unregister('page_end', 'addon/helloaddon/helloaddon.php', 'helloaddon_page_end'); } function helloaddon_page_end(&$html) { $html .= '

Hello, World!

'; }