hook_cache_flush()
Flush all persistent and static caches.
This hook asks your module to clear all of its static caches, in order to ensure a clean environment for subsequently invoked data rebuilds.
Do NOT use this hook for rebuilding information. Only use it to flush custom caches.
Static caches using drupal_static() do not need to be reset manually. However, all other static variables that do not use drupal_static() must be manually reset.
This hook is invoked by drupal_flush_all_caches(). It runs before module data is updated and before hook_rebuild().
See also
Related topics
- Hooks
- Define functions that alter the behavior of Drupal core.
File
- core/core.api.php, line 2154
- Documentation landing page and topics, plus core library hooks.
Code
function hook_cache_flush() { if (defined('MAINTENANCE_MODE') && MAINTENANCE_MODE == 'update') { _update_cache_clear(); } }
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