function __construct()
{
if ($GLOBALS['db_config']) {
$db_config = $GLOBALS['db_config'];
self::$db = new mysqli($db_config['host'], $db_config['user'], $db_config['pswd'], $db_config['db']);
self::$db->query('set names ' . $db_config['charset'] . ';');
$this->logger(__CLASS__, __METHOD__, 'db connect ..');
}
if ($GLOBALS['redis']) {
self::$redis = $GLOBALS['redis'];
}
if ($GLOBALS['memcached_config']) {
$memcached_config = $GLOBALS['memcached_config'];
//创建一个memcache对象
self::$memcached = new Memcached();
self::$memcached->addServer($memcached_config['host'], $memcached_config['port']) or die("Could not connect");
self::$memcached->setOption(Memcached::OPT_BINARY_PROTOCOL, true);
//使用binary二进制协议
if ($memcached_config['user'] && $memcached_config['password']) {
self::$memcached->setSaslAuthData($memcached_config['user'], $memcached_config['password']);
}
}
}