swoole_redis->connect

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function swoole_redis->connect(string $host, int $port, callable $callback);

$host: Redis��IP
$port: Redis��Ķ˿�
$callback: ��ӳɹ��ص��ĺ��

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function onConnect(swoole_redis $redis, bool $result);

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$result: ��ӳɹ�Ϊtrue��ʧ��Ϊfalse��Զ�ȡ$redis->errCode��ô��룬��ȡ$redis->errMsg��ô��Ϣ

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$client = new swoole_redis;
$client->connect('127.0.0.1', 6379, function (swoole_redis $client, $result) {
    if ($result === false) {
        echo "connect to redis server failed.\n"
        return;
    }
    $client->set('key', 'swoole', function (swoole_redis $client, $result) {
        var_dump($result);
    });
});