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Copyright 1997-2018 the PHP Documentation Group.

The plugin is implemented as a PHP extension. See also the installation instructions to install the PECL/mysqlnd_qc extension.

Compile or configure the PHP MySQL extension (mysqli, PDO_MYSQL, mysql) that you plan to use with support for the mysqlnd library. PECL/mysqlnd_qc is a plugin for the mysqlnd library. To use the plugin with any of the existing PHP MySQL extensions (APIs), the extension has to use the mysqlnd library.

Then, load the extension into PHP and activate the plugin in the PHP configuration file using the PHP configuration directive named mysqlnd_qc.enable_qc.

Example 7.307 Enabling the plugin (php.ini)