When :func:`memcached_delete` is called this function will be executed. At
the point of its execution all connections are closed.
-
.. enumerator:: MEMCACHED_CALLBACK_CLONE_FUNCTION
When :func:`memcached_delete` is called this function will be executed.
The prototype for this is:
.. type:: memcached_return_t (*memcached_trigger_delete_key)(memcached_st *ptr, char *key, size_t key_length)
-
DESCRIPTION
-----------
You can use `MEMCACHED_CALLBACK_USER_DATA` to provide custom context
if required for any of the callbacks.
-
-
RETURN VALUE
------------