You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
3.3 KiB
PHP
104 lines
3.3 KiB
PHP
<?php
|
|
|
|
namespace Safe;
|
|
|
|
use Safe\Exceptions\MysqlndQcException;
|
|
|
|
/**
|
|
* Flush all cache contents.
|
|
*
|
|
* Flushing the cache is a storage handler responsibility.
|
|
* All built-in storage handler but the
|
|
* memcache storage
|
|
* handler support flushing the cache. The
|
|
* memcache
|
|
* storage handler cannot flush its cache contents.
|
|
*
|
|
* User-defined storage handler may or may not support the operation.
|
|
*
|
|
* @throws MysqlndQcException
|
|
*
|
|
*/
|
|
function mysqlnd_qc_clear_cache(): void
|
|
{
|
|
error_clear_last();
|
|
$result = \mysqlnd_qc_clear_cache();
|
|
if ($result === false) {
|
|
throw MysqlndQcException::createFromPhpError();
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Installs a callback which decides whether a statement is cached.
|
|
*
|
|
* There are several ways of hinting PELC/mysqlnd_qc to cache a query.
|
|
* By default, PECL/mysqlnd_qc attempts to cache a if caching of all statements
|
|
* is enabled or the query string begins with a certain SQL hint.
|
|
* The plugin internally calls a function named is_select()
|
|
* to find out. This internal function can be replaced with a user-defined callback.
|
|
* Then, the user-defined callback is responsible to decide whether the plugin
|
|
* attempts to cache a statement. Because the internal function is replaced
|
|
* with the callback, the callback gains full control. The callback is free
|
|
* to ignore the configuration setting mysqlnd_qc.cache_by_default
|
|
* and SQL hints.
|
|
*
|
|
* The callback is invoked for every statement inspected by the plugin.
|
|
* It is given the statements string as a parameter. The callback returns
|
|
* FALSE if the statement shall not be cached. It returns TRUE to
|
|
* make the plugin attempt to cache the statements result set, if any.
|
|
* A so-created cache entry is given the default TTL set with the
|
|
* PHP configuration directive mysqlnd_qc.ttl.
|
|
* If a different TTL shall be used, the callback returns a numeric
|
|
* value to be used as the TTL.
|
|
*
|
|
* The internal is_select function is part of the internal
|
|
* cache storage handler interface. Thus, a user-defined storage handler
|
|
* offers the same capabilities.
|
|
*
|
|
* @param string $callback
|
|
* @return mixed Returns TRUE on success.
|
|
* @throws MysqlndQcException
|
|
*
|
|
*/
|
|
function mysqlnd_qc_set_is_select(string $callback)
|
|
{
|
|
error_clear_last();
|
|
$result = \mysqlnd_qc_set_is_select($callback);
|
|
if ($result === false) {
|
|
throw MysqlndQcException::createFromPhpError();
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @param string $handler 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.
|
|
* @throws MysqlndQcException
|
|
*
|
|
*/
|
|
function mysqlnd_qc_set_storage_handler(string $handler): void
|
|
{
|
|
error_clear_last();
|
|
$result = \mysqlnd_qc_set_storage_handler($handler);
|
|
if ($result === false) {
|
|
throw MysqlndQcException::createFromPhpError();
|
|
}
|
|
}
|