Name Type Location Description
config_clear function core/includes/config.inc A shortcut function to delete a single value from a config file.
Config::clear function core/includes/config.inc Unsets a value in this configuration object.
CacheClearCase class core/modules/simpletest/tests/cache.test Test cache clearing methods.
cache_clear_all function core/includes/cache.inc Clears data from the cache.
tempstore_clear function core/includes/common.inc Removes an object from the semi-persistent key-value store.
menu_cache_clear function core/includes/menu.inc Clears the cached data for a single named menu.
form_clear_error function core/includes/form.inc Clears all errors against all form elements made by form_set_error().
field_cache_clear function core/modules/field/field.module Clear the field info and field data caches.
flood_clear_event function core/includes/common.inc Makes the flood control mechanism forget an event for the current visitor.
token_cache_clear function core/includes/token.inc Clear token caches and static variables.
DatabaseLog::clear function core/includes/database/log.inc Empty the query log for the specified logging key.
_update_cache_clear function core/modules/update/update.module Invalidates cached data relating to update status.
tempstore_clear_all function core/includes/common.inc Removes an entire group of objects from the semi-persistent key-value store.
menu_cache_clear_all function core/includes/menu.inc Clears all cached menu data.
dblog_clear_log_form function core/modules/dblog/dblog.admin.inc Form constructor for the form that clears out the log.
CacheClearCase::setUp function core/modules/simpletest/tests/cache.test Sets up a Backdrop site for running functional and integration tests.
drupal_clear_js_cache function core/includes/drupal.inc Deletes old cached JavaScript files and variables.
Layout::clearContexts function core/modules/layout/includes/layout.class.inc Clear a stored context.
file_info_cache_clear function core/modules/file/file.module Clears caches that are related to file entity.
drupal_clear_css_cache function core/includes/drupal.inc Deletes old cached CSS files.
_menu_clear_page_cache function core/includes/menu.inc Clears the page and block caches at most twice per page load.
dblog_clear_log_submit function core/modules/dblog/dblog.admin.inc Form submission handler for dblog_clear_log_form().
field_info_cache_clear function core/modules/field/field.info.inc Clears the field info cache without clearing the field data cache.
backdrop_clear_js_cache function core/includes/common.inc Deletes old cached JavaScript files and variables.
entity_info_cache_clear function core/modules/entity/entity.module Resets the cached information about entity types.
drupal_clear_path_cache function core/includes/drupal.inc Clear the path cache.
backdrop_clear_css_cache function core/includes/common.inc Deletes old cached CSS files.
redirect_page_cache_clear function core/modules/redirect/redirect.module Clear a page from the page cache.
system_clear_cache_submit function core/modules/system/system.admin.inc Submit callback; clear system caches.
update_cache_clear_submit function core/modules/update/update.module Form submission handler for system_modules().
node_clear_node_tempstore function core/modules/node/node.module Remove an item from the object cache.
backdrop_clear_path_cache function core/includes/path.inc Clear the path cache.
views_ui_tools_clear_cache function core/modules/views_ui/views_ui.admin.inc Submit hook to clear the views cache.
backdrop_clear_opcode_cache function core/includes/bootstrap.inc Invalidates a PHP file from any active opcode caches.
CacheClearCase::testClearCid function core/modules/simpletest/tests/cache.test Test clearing using a cid.
layout_clear_layout_tempstore function core/modules/layout/layout.module Remove an item from the object cache.
filter_clear_format_tempstore function core/modules/filter/filter.module Remove an item from the object cache.
CacheClearCase::testClearArray function core/modules/simpletest/tests/cache.test Test clearing using an array.
system_clear_page_cache_submit function core/modules/system/system.admin.inc Submit callback; clear the page cache.
CacheClearCase::testClearWildcard function core/modules/simpletest/tests/cache.test Test clearing using wildcard.
cache_example_form_cache_clearing function modules/examples/cache_example/cache_example.module Submit handler to demonstrate the various methods for clearing cache.
installer_clear_update_disk_cache function core/modules/installer/installer.module Clears the temporary files and directories based on file age from disk.
CacheClearCase::testFlushAllCaches function core/modules/simpletest/tests/cache.test Test backdrop_flush_all_caches().
BackdropWebTestCase::clearWatchdog function core/modules/simpletest/backdrop_web_test_case.php Clears the watchdog database table.
DBLogTestCase::testDBLogAddAndClear function core/modules/dblog/tests/dblog.test Tests the addition and clearing of log events through the admin interface.
DateViewsTestCase::clearViewsCaches function core/modules/date/tests/date_views.test Clear all views caches and static caches which are required for the patch.
installer_browser_install_queue_clear function core/modules/installer/installer.browser.inc Clears the install queue.
FieldViewsTestHelper::clearViewsCaches function core/modules/field/tests/field_views.test Clear all views caches and static caches which are required for the patch.
_installer_authorize_clear_update_status function core/modules/installer/installer.authorize.inc Clears cached available update status data.
views_plugin_query_default::clear_fields function core/modules/views/plugins/views_plugin_query_default.inc Remove all fields that may have been added; primarily used for summary mode where we're changing the query because we didn't get data we needed.

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