(PECL mysqlnd_qc >= 1.0.0)

mysqlnd_qc_set_storage_handlerChange current storage handler


bool mysqlnd_qc_set_storage_handler ( string $handler )

Sets the storage handler used by the query cache. A list of available storage handler can be obtained from mysqlnd_qc_get_available_handlers(). Which storage are available depends on the compile time configuration of the query cache plugin. The default storage handler is always available. All other storage handler must be enabled explicitly when building the extension.



Handler can be of type string representing the name of a built-in storage handler or an object of type mysqlnd_qc_handler_default. The names of the built-in storage handler are default, APC, MEMCACHE, sqlite.

Значення, що повертаються

Повертає TRUE в успішному випадку або FALSE в разі помилки.

If changing the storage handler fails a catchable fatal error will be thrown. The query cache cannot operate if the previous storage handler has been shutdown but no new storage handler has been installed.


Приклад #1 mysqlnd_qc_set_storage_handler() example

The example shows the output from the built-in default storage handler. Other storage handler may report different data.


if (
true === mysqlnd_qc_set_storage_handler("default"))
printf("Default storage handler activated");

/* Catchable fatal error */

Наведені вище приклади виведуть:

Default storage handler activated
Catchable fatal error: mysqlnd_qc_set_storage_handler(): Unknown handler 'unknown' in (file) on line (line)

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