En phpBB3 se utilizan una serie de funciones para hacer referencia a algo en concreto, por ejemplo U_INDEX hace referencia al índice del foro.
Estas funciones vienen determinadas en el archivo includes/functions.php
Y aquí viene mi pregunta, hay alguna función que me permita hacer referencia a la página en la que me encuentro? En caso de que no la haya, cómo puedo hacer referencia a esa página con php?
Aquí os pongo las funciones definidas en functions.php:
Código:
'SITENAME'						=> $config['sitename'],
		'SITE_DESCRIPTION'				=> $config['site_desc'],
		'PAGE_TITLE'					=> $page_title,
		'SCRIPT_NAME'					=> str_replace('.' . $phpEx, '', $user->page['page_name']),
		'LAST_VISIT_DATE'				=> sprintf($user->lang['YOU_LAST_VISIT'], $s_last_visit),
		'LAST_VISIT_YOU'				=> $s_last_visit,
		'CURRENT_TIME'					=> sprintf($user->lang['CURRENT_TIME'], $user->format_date(time(), false, true)),
		'TOTAL_USERS_ONLINE'			=> $l_online_users,
		'LOGGED_IN_USER_LIST'			=> $online_userlist,
		'RECORD_USERS'					=> $l_online_record,
		'PRIVATE_MESSAGE_INFO'			=> $l_privmsgs_text,
		'PRIVATE_MESSAGE_INFO_UNREAD'	=> $l_privmsgs_text_unread,

		'S_USER_NEW_PRIVMSG'			=> $user->data['user_new_privmsg'],
		'S_USER_UNREAD_PRIVMSG'			=> $user->data['user_unread_privmsg'],

		'SID'				=> $SID,
		'_SID'				=> $_SID,
		'SESSION_ID'		=> $user->session_id,
		'ROOT_PATH'			=> $phpbb_root_path,

		'L_LOGIN_LOGOUT'	=> $l_login_logout,
		'L_INDEX'			=> $user->lang['FORUM_INDEX'],
		'L_ONLINE_EXPLAIN'	=> $l_online_time,

		'U_PRIVATEMSGS'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&folder=inbox'),
		'U_RETURN_INBOX'		=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&folder=inbox'),
		'U_POPUP_PM'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&mode=popup'),
		'UA_POPUP_PM'			=> addslashes(append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&mode=popup')),
		'U_MEMBERLIST'			=> append_sid("{$phpbb_root_path}memberlist.$phpEx"),
		'U_MEMBERSLIST'			=> append_sid("{$phpbb_root_path}memberlist.$phpEx"),
		'U_VIEWONLINE'			=> ($auth->acl_gets('u_viewprofile', 'a_user', 'a_useradd', 'a_userdel')) ? append_sid("{$phpbb_root_path}viewonline.$phpEx") : '',
		'U_LOGIN_LOGOUT'		=> $u_login_logout,
		'U_INDEX'				=> append_sid("{$phpbb_root_path}index.$phpEx"),
		'U_SEARCH'				=> append_sid("{$phpbb_root_path}search.$phpEx"),
		'U_REGISTER'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=register'),
		'U_PROFILE'				=> append_sid("{$phpbb_root_path}ucp.$phpEx"),
		'U_MODCP'				=> append_sid("{$phpbb_root_path}mcp.$phpEx", false, true, $user->session_id),
		'U_FAQ'					=> append_sid("{$phpbb_root_path}faq.$phpEx"),
		'U_SEARCH_SELF'			=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=egosearch'),
		'U_SEARCH_NEW'			=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=newposts'),
		'U_SEARCH_UNANSWERED'	=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=unanswered'),
		'U_SEARCH_ACTIVE_TOPICS'=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=active_topics'),
		'U_DELETE_COOKIES'		=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=delete_cookies'),
		'U_TEAM'				=> append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=leaders'),
		'U_RESTORE_PERMISSIONS'	=> ($user->data['user_perm_from'] && $auth->acl_get('a_switchperm')) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=restore_perm') : '',

		'S_USER_LOGGED_IN'		=> ($user->data['user_id'] != ANONYMOUS) ? true : false,
		'S_AUTOLOGIN_ENABLED'	=> ($config['allow_autologin']) ? true : false,
		'S_BOARD_DISABLED'		=> ($config['board_disable']) ? true : false,
		'S_REGISTERED_USER'		=> $user->data['is_registered'],
		'S_IS_BOT'				=> $user->data['is_bot'],
		'S_USER_PM_POPUP'		=> $user->optionget('popuppm'),
		'S_USER_LANG'			=> $user->lang['USER_LANG'],
		'S_USER_BROWSER'		=> (isset($user->data['session_browser'])) ? $user->data['session_browser'] : $user->lang['UNKNOWN_BROWSER'],
		'S_USERNAME'			=> $user->data['username'],
		'S_CONTENT_DIRECTION'	=> $user->lang['DIRECTION'],
		'S_CONTENT_FLOW_BEGIN'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'left' : 'right',
		'S_CONTENT_FLOW_END'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'right' : 'left',
		'S_CONTENT_ENCODING'	=> 'UTF-8',
		'S_TIMEZONE'			=> ($user->data['user_dst'] || ($user->data['user_id'] == ANONYMOUS && $config['board_dst'])) ? sprintf($user->lang['ALL_TIMES'], $user->lang['tz'][$tz], $user->lang['tz']['dst']) : sprintf($user->lang['ALL_TIMES'], $user->lang['tz'][$tz], ''),
		'S_DISPLAY_ONLINE_LIST'	=> ($l_online_time) ? 1 : 0,
		'S_DISPLAY_SEARCH'		=> (!$config['load_search']) ? 0 : (isset($auth) ? ($auth->acl_get('u_search') && $auth->acl_getf_global('f_search')) : 1),
		'S_DISPLAY_PM'			=> ($config['allow_privmsg'] && $user->data['is_registered'] && ($auth->acl_get('u_readpm') || $auth->acl_get('u_sendpm'))) ? true : false,
		'S_DISPLAY_MEMBERLIST'	=> (isset($auth)) ? $auth->acl_get('u_viewprofile') : 0,
		'S_NEW_PM'				=> ($s_privmsg_new) ? 1 : 0,

		'T_THEME_PATH'			=> "{$phpbb_root_path}styles/" . $user->theme['theme_path'] . '/theme',
		'T_TEMPLATE_PATH'		=> "{$phpbb_root_path}styles/" . $user->theme['template_path'] . '/template',
		'T_IMAGESET_PATH'		=> "{$phpbb_root_path}styles/" . $user->theme['imageset_path'] . '/imageset',
		'T_IMAGESET_LANG_PATH'	=> "{$phpbb_root_path}styles/" . $user->theme['imageset_path'] . '/imageset/' . $user->data['user_lang'],
		'T_IMAGES_PATH'			=> "{$phpbb_root_path}images/",
		'T_SMILIES_PATH'		=> "{$phpbb_root_path}{$config['smilies_path']}/",
		'T_AVATAR_PATH'			=> "{$phpbb_root_path}{$config['avatar_path']}/",
		'T_AVATAR_GALLERY_PATH'	=> "{$phpbb_root_path}{$config['avatar_gallery_path']}/",
		'T_ICONS_PATH'			=> "{$phpbb_root_path}{$config['icons_path']}/",
		'T_RANKS_PATH'			=> "{$phpbb_root_path}{$config['ranks_path']}/",
		'T_UPLOAD_PATH'			=> "{$phpbb_root_path}{$config['upload_path']}/",
		'T_STYLESHEET_LINK'		=> (!$user->theme['theme_storedb']) ? "{$phpbb_root_path}styles/" . $user->theme['theme_path'] . '/theme/stylesheet.css' : "{$phpbb_root_path}style.$phpEx?sid=$user->session_id&id=" . $user->theme['style_id'] . '&lang=' . $user->data['user_lang'],
		'T_STYLESHEET_NAME'		=> $user->theme['theme_name'],

		'SITE_LOGO_IMG'			=> $user->img('site_logo'))
Saludos y gracias