//buffer不存在
if (!$buffer) {
$buffer = new swoole_buffer();
$serv->set_buffer($fd, $buffer);
}
//等待所有数据，将不会再通知
$buffer->wait($size);
//写入到buffer中
$buffer->write($data);
//从缓存区中读取数据
$buffer->read(8192, 0);
//清空数据
$buffer->clear();
//释放此buffer内存
$buffer->free();
//缓存区长度
$buffer->length();
//投递此数据到worker进程，并清理此buffer
$serv->dispatch($buffer, $worker_id);
$serv->send($fd, "hello world");
$serv->close($fd);
});
$serv->on('receive', function (swoole_server $serv, $fd, $from_id, $data) {
//echo "[#".posix_getpid()."]\tClient[$fd]: $data\n";
$serv->send($fd, json_encode(array("hello" => '1213', "bat" => "ab")));
//$serv->close($fd);
});
$serv->on('close', function ($serv, $fd, $from_id) {
//echo "[#".posix_getpid()."]\tClient@[$fd:$from_id]: Close.\n";
});
$serv->start();
