drupal 7全局变量

drupal 7全局变量是drupal开发过程中很重要的参考api.尽快的了解它们，方便我们在drupal站点开发中恰当的使用这些变量。

名称位置描述$active_dbdeveloper/globals.phpActive database connection.$base_pathdeveloper/globals.phpThe base path of the drupal installation. At least will default to /.$base_rootdeveloper/globals.phpThe root URL of the host excludes the path.$base_theme_infodeveloper/globals.phpAn array of objects that reperesent the base theme. For documentation of the
theme object see _init_theme().$base_urldeveloper/globals.phpThe base URL of the drupal installation.$channeldeveloper/globals.phpAn associative array containing title, link, description and other keys.
The link should be an absolute URL.$conf./authorize.php $confdeveloper/globals.phpArray of persistent variables stored in 'variable' table.$cookie_domaindeveloper/globals.phpThe domain to be used form session cookies.$custom_themedeveloper/globals.phpName of custom theme to override default theme.$db_prefixdeveloper/globals.phpThe prefix to be placed on all database tables.$db_typedeveloper/globals.phpThe type of database being used.$db_urldeveloper/globals.phpThe url of the database. Thorough documentation provided in default.settings.php.$elementdeveloper/globals.phpStructured array describing the data to be rendered.$forum_topic_list_headerdeveloper/globals.phpAn array of topic header information.$iddeveloper/globals.phpActive statistics record id.$imagedeveloper/globals.phpCurrent image tag used by aggregator.$installed_profiledeveloper/globals.phpThe name of the profile that has just been installed.$install_localedeveloper/globals.phpThe locale to use during installation$itemdeveloper/globals.phpGeneral string or array.$itemsdeveloper/globals.phpArray of items used by aggregator.$languagedeveloper/globals.phpAn object containing the information for the active language.$last_resultdeveloper/globals.phpResource of the query executed.$menu_admindeveloper/globals.phpBoolean indicating that a menu administrator is running the menu access check.$multibytedeveloper/globals.phpThe current multibyte mode.
Possible values: UNICODE_ERROR, UNICODE_SINGLEBYTE, UNICODE_MULTIBYTE.$niddeveloper/globals.phpActive blog node id.$pager_page_arraydeveloper/globals.phpResult of pager_query() that is utilized by other functions.$pager_totaldeveloper/globals.phpArray of the total number of pages per pager. The key is will be 0 by defualt, but
can be specified via the $element parameter of pager_query().$pager_total_itemsdeveloper/globals.phpArray of the total number of items per pager. The key is will be 0 by defualt, but
can be specified via the $element parameter of pager_query().$profiledeveloper/globals.phpThe name of the currently installed profile.$queriesdeveloper/globals.phpArray of queries that have been executed.$recent_activitydeveloper/globals.phpRecent activity statistics generated by statistics_exit().$tagdeveloper/globals.phpActive tag name.$themedeveloper/globals.phpName of the active theme.$theme_enginedeveloper/globals.phpThe active theme engine related to the active theme.$theme_infodeveloper/globals.phpActive theme object. For documentation of the theme object see _init_theme().$theme_keydeveloper/globals.phpName of the active theme.$theme_pathdeveloper/globals.phpPath to the active theme.$timersdeveloper/globals.phpStores timers that have been created by timer_start().$update_free_accessdeveloper/globals.phpAccess control for update.php script. Allows the update.phpscript to be run when
not logged in as and administrator.$update_modedeveloper/globals.phpDisabled caling hook_boot() and hook_exit() during the update process (update.php) since
the database is in a largely unknown state.$usermodules/php/php.module $userdeveloper/globals.phpRepresentation of the current user. Stores preferences and other user information.$xrds_current_servicedeveloper/globals.phpArray used by XRDS XML parser for OpenID to track parsing state.$xrds_open_elementsdeveloper/globals.phpArray used by XRDS XML parser for OpenID to track parsing state.$xrds_servicesdeveloper/globals.phpArray used by XRDS XML parser for OpenID to track parsing state.