PHP 5.3.3 or a newer version of PHP 5.3. PHP 5.4.0 is not yet supported.

PECL/mysqlnd_qc is a mysqlnd plugin. It plugs into the mysqlnd library. To use you plugin with a PHP MySQL extension (mysqli, mysql, PDO_MYSQL) it is necessary to enable use of the mysqlnd library by the PHP MySQL extension in question. Please refer to the extensions manual sections for details.

For using APC storage handler: APC 3.1.3p1-beta or newer.

For using MEMCACHE storage handler: libmemcache 0.38 or newer.

For using sqlite storage handler: sqlite3 bundled with PHP.