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admin/phpMyAdmin/vendor/thecodingmachine/safe/generated/mysqlndQc.php
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103
admin/phpMyAdmin/vendor/thecodingmachine/safe/generated/mysqlndQc.php
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<?php
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namespace Safe;
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use Safe\Exceptions\MysqlndQcException;
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/**
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* Flush all cache contents.
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*
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* Flushing the cache is a storage handler responsibility.
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* All built-in storage handler but the
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* memcache storage
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* handler support flushing the cache. The
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* memcache
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* storage handler cannot flush its cache contents.
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*
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* User-defined storage handler may or may not support the operation.
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*
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* @throws MysqlndQcException
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*
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*/
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function mysqlnd_qc_clear_cache(): void
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{
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error_clear_last();
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$result = \mysqlnd_qc_clear_cache();
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if ($result === false) {
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throw MysqlndQcException::createFromPhpError();
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}
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}
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/**
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* Installs a callback which decides whether a statement is cached.
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*
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* There are several ways of hinting PELC/mysqlnd_qc to cache a query.
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* By default, PECL/mysqlnd_qc attempts to cache a if caching of all statements
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* is enabled or the query string begins with a certain SQL hint.
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* The plugin internally calls a function named is_select()
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* to find out. This internal function can be replaced with a user-defined callback.
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* Then, the user-defined callback is responsible to decide whether the plugin
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* attempts to cache a statement. Because the internal function is replaced
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* with the callback, the callback gains full control. The callback is free
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* to ignore the configuration setting mysqlnd_qc.cache_by_default
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* and SQL hints.
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*
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* The callback is invoked for every statement inspected by the plugin.
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* It is given the statements string as a parameter. The callback returns
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* FALSE if the statement shall not be cached. It returns TRUE to
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* make the plugin attempt to cache the statements result set, if any.
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* A so-created cache entry is given the default TTL set with the
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* PHP configuration directive mysqlnd_qc.ttl.
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* If a different TTL shall be used, the callback returns a numeric
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* value to be used as the TTL.
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*
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* The internal is_select function is part of the internal
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* cache storage handler interface. Thus, a user-defined storage handler
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* offers the same capabilities.
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*
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* @param string $callback
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* @return mixed Returns TRUE on success.
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* @throws MysqlndQcException
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*
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*/
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function mysqlnd_qc_set_is_select(string $callback)
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{
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error_clear_last();
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$result = \mysqlnd_qc_set_is_select($callback);
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if ($result === false) {
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throw MysqlndQcException::createFromPhpError();
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}
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return $result;
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}
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/**
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* Sets the storage handler used by the query cache. A list of available
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* storage handler can be obtained from
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* mysqlnd_qc_get_available_handlers.
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* Which storage are available depends on the compile time
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* configuration of the query cache plugin. The
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* default storage handler is always available.
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* All other storage handler must be enabled explicitly when building the
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* extension.
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*
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* @param string $handler Handler can be of type string representing the name of a
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* built-in storage handler or an object of type
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* mysqlnd_qc_handler_default.
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* The names of the built-in storage handler are
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* default,
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* APC,
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* MEMCACHE,
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* sqlite.
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* @throws MysqlndQcException
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*
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*/
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function mysqlnd_qc_set_storage_handler(string $handler): void
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{
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error_clear_last();
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$result = \mysqlnd_qc_set_storage_handler($handler);
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if ($result === false) {
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throw MysqlndQcException::createFromPhpError();
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}
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}
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