mysqlnd_qc_set_user_handlers Sets the callback functions for a user-defined procedural storage handler &reftitle.description; bool mysqlnd_qc_set_user_handlers string get_hash string find_query_in_cache string return_to_cache string add_query_to_cache_if_not_exists string query_is_select string update_query_run_time_stats string get_stats string clear_cache Sets the callback functions for a user-defined procedural storage handler. &reftitle.parameters; get_hash Name of the user function implementing the storage handler get_hash functionality. find_query_in_cache Name of the user function implementing the storage handler find_in_cache functionality. return_to_cache Name of the user function implementing the storage handler return_to_cache functionality. add_query_to_cache_if_not_exists Name of the user function implementing the storage handler add_query_to_cache_if_not_exists functionality. query_is_select Name of the user function implementing the storage handler query_is_select functionality. update_query_run_time_stats Name of the user function implementing the storage handler update_query_run_time_stats functionality. get_stats Name of the user function implementing the storage handler get_stats functionality. clear_cache Name of the user function implementing the storage handler clear_cache functionality. &reftitle.returnvalues; Returns TRUE on success or FALSE on FAILURE. &reftitle.seealso; Procedural user-defined storage handler example