Thrift（PHP）入门无错篇章

时间：2017-10-10 20:30:14 阅读：214 评论：0 收藏：0 [点我收藏+]

一、安装篇

博主注：截至2017-10-10，官网上thrift最新版0.10.0一直无法成功编译。所以，请选择0.9.3版本，避免走各种弯路：

wget http://apache.fayea.com/thrift/0.9.3/thrift-0.9.3.tar.gz

1、安装开发平台工具

yum -y groupinstall "Development Tools"

2、安装autoconf

wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
tar xvf autoconf-2.69.tar.gz
cd autoconf-2.69
./configure --prefix=/usr/local
make
make install

3、安装automake

wget http://ftp.gnu.org/gnu/automake/automake-1.14.tar.gz
tar xvf automake-1.14.tar.gz
cd automake-1.14
./configure --prefix=/usr/local
make
make install

4、安装bison

wget http://ftp.gnu.org/gnu/bison/bison-2.5.1.tar.gz
tar xvf bison-2.5.1.tar.gz
cd bison-2.5.1
./configure --prefix=/usr/local
make
make install

5、安装C++库依赖包

yum -y install libevent-devel zlib-devel openssl-devel

6、安装boost

wget http://sourceforge.net/projects/boost/files/boost/1.53.0/boost_1_53_0.tar.gz
tar xvf boost_1_53_0.tar.gz
cd boost_1_53_0
./bootstrap.sh
./b2

7、安装其它依赖包

yum install gcc gcc-c++ bzip2 bzip2-devel bzip2-libs python-devel -y

8、安装thrift（基本的编译套路）

cd thrift
./bootstrap.sh
./configure --with-lua=no
make
make install

二、Hello World篇

使用套路总结：

1、用IDL语法，定义自己的数据结构与服务接口：

https://git-wip-us.apache.org/repos/asf?p=thrift.git;a=blob_plain;f=tutorial/tutorial.thrift
https://git-wip-us.apache.org/repos/asf?p=thrift.git;a=blob_plain;f=tutorial/shared.thrift

将这两个文件下载到本地，分别保存为tutorial.thrift和shared.thrift，并将这两个文件传到与thrift同目录下。

附：

IDL详细教程：http://thrift.apache.org/docs/idl

IDL示例（够用了）：https://git-wip-us.apache.org/repos/asf?p=thrift.git;a=blob_plain;f=tutorial/tutorial.thrift

https://git-wip-us.apache.org/repos/asf?p=thrift.git;a=blob_plain;f=tutorial/shared.thrift

2、用thrift将上面的thrift的IDL文件，转成对应语言的类：

thrift -gen php:server tutorial.thrift

上面这一句是对应服务端的转换，客户端的转换不用:server；但是服务端方式生成的类文件可以供客户端使用。

3、转换完成后，在本目录下会得到一个gen-php目录，里面有三个文件tutorial.php、shared.php和Types.php。

tutorial.php里面有一个CalculatorIf接口，这个类是我们要实现的服务端业务接口。

shared.php被引用在tutorial.php文件中。

Types.php里面是自定义数据类型。

4、实现server端，即需要创建一个Handler类实再业务接口CalculatorIf

注意：这里的lib文件在thrift源码包lib里，我们移到自己的php需要的路径中。代码中require_once部分、$GEN_DIR部分、Thrift命名空间注册部分的路径需要根据实际情况进行更改

<?php

namespace tutorial\php;

error_reporting(E_ALL);

require_once __DIR__.‘/../../lib/php/lib/Thrift/ClassLoader/ThriftClassLoader.php‘;

use Thrift\ClassLoader\ThriftClassLoader;

$GEN_DIR = realpath(dirname(__FILE__).‘/..‘).‘/gen-php‘;

$loader = new ThriftClassLoader();
$loader->registerNamespace(‘Thrift‘, __DIR__ . ‘/../../lib/php/lib‘);
$loader->registerDefinition(‘shared‘, $GEN_DIR);
$loader->registerDefinition(‘tutorial‘, $GEN_DIR);
$loader->register();


if (php_sapi_name() == ‘cli‘) {
  ini_set("display_errors", "stderr");
}

use Thrift\Protocol\TBinaryProtocol;
use Thrift\Transport\TPhpStream;
use Thrift\Transport\TBufferedTransport;

class CalculatorHandler implements \tutorial\CalculatorIf {
  protected $log = array();

  public function ping() {
    error_log("ping()");
  }

  public function add($num1, $num2) {
    error_log("add({$num1}, {$num2})");
    return $num1 + $num2;
  }

  public function calculate($logid, \tutorial\Work $w) {
    error_log("calculate({$logid}, {{$w->op}, {$w->num1}, {$w->num2}})");
    switch ($w->op) {
      case \tutorial\Operation::ADD:
        $val = $w->num1 + $w->num2;
        break;
      case \tutorial\Operation::SUBTRACT:
        $val = $w->num1 - $w->num2;
        break;
      case \tutorial\Operation::MULTIPLY:
        $val = $w->num1 * $w->num2;
        break;
      case \tutorial\Operation::DIVIDE:
        if ($w->num2 == 0) {
          $io = new \tutorial\InvalidOperation();
          $io->whatOp = $w->op;
          $io->why = "Cannot divide by 0";
          throw $io;
        }
        $val = $w->num1 / $w->num2;
        break;
      default:
        $io = new \tutorial\InvalidOperation();
        $io->whatOp = $w->op;
        $io->why = "Invalid Operation";
        throw $io;
    }

    $log = new \shared\SharedStruct();
    $log->key = $logid;
    $log->value = (string)$val;
    $this->log[$logid] = $log;

    return $val;
  }

  public function getStruct($key) {
    error_log("getStruct({$key})");
    // This actually doesn‘t work because the PHP interpreter is
    // restarted for every request.
    //return $this->log[$key];
    return new \shared\SharedStruct(array("key" => $key, "value" => "PHP is stateless!"));
  }

  public function zip() {
    error_log("zip()");
  }

};

header(‘Content-Type‘, ‘application/x-thrift‘);
if (php_sapi_name() == ‘cli‘) {
  echo "\r\n";
}

$handler = new CalculatorHandler();
$processor = new \tutorial\CalculatorProcessor($handler);

$transport = new TBufferedTransport(new TPhpStream(TPhpStream::MODE_R | TPhpStream::MODE_W));
$protocol = new TBinaryProtocol($transport, true, true);

$transport->open();
$processor->process($protocol, $protocol);
$transport->close();

5、实现client端：

同样需要注意：这里的lib文件在thrift源码包lib里，我们移到自己的php需要的路径中。代码中require_once部分、$GEN_DIR部分、Thrift命名空间注册部分的路径需要根据实际情况进行更改

<?php

namespace tutorial\php;

error_reporting(E_ALL);

require_once __DIR__.‘/../../lib/php/lib/Thrift/ClassLoader/ThriftClassLoader.php‘;

use Thrift\ClassLoader\ThriftClassLoader;

$GEN_DIR = realpath(dirname(__FILE__).‘/..‘).‘/gen-php‘;

$loader = new ThriftClassLoader();
$loader->registerNamespace(‘Thrift‘, __DIR__ . ‘/../../lib/php/lib‘);
$loader->registerDefinition(‘shared‘, $GEN_DIR);
$loader->registerDefinition(‘tutorial‘, $GEN_DIR);
$loader->register();


use Thrift\Protocol\TBinaryProtocol;
use Thrift\Transport\TSocket;
use Thrift\Transport\THttpClient;
use Thrift\Transport\TBufferedTransport;
use Thrift\Exception\TException;

try {
  if (array_search(‘--http‘, $argv)) {
    $socket = new THttpClient(‘localhost‘, 8080, ‘/php/PhpServer.php‘);
  } else {
    $socket = new TSocket(‘localhost‘, 9090);
  }
  $transport = new TBufferedTransport($socket, 1024, 1024);
  $protocol = new TBinaryProtocol($transport);
  $client = new \tutorial\CalculatorClient($protocol);

  $transport->open();

  $client->ping();
  print "ping()\n";

  $sum = $client->add(1,1);
  print "1+1=$sum\n";

  $work = new \tutorial\Work();

  $work->op = \tutorial\Operation::DIVIDE;
  $work->num1 = 1;
  $work->num2 = 0;

  try {
    $client->calculate(1, $work);
    print "Whoa! We can divide by zero?\n";
  } catch (\tutorial\InvalidOperation $io) {
    print "InvalidOperation: $io->why\n";
  }

  $work->op = \tutorial\Operation::SUBTRACT;
  $work->num1 = 15;
  $work->num2 = 10;
  $diff = $client->calculate(1, $work);
  print "15-10=$diff\n";

  $log = $client->getStruct(1);
  print "Log: $log->value\n";

  $transport->close();

} catch (TException $tx) {
  print ‘TException: ‘.$tx->getMessage()."\n";
}

?>

6、因为php的server端代码没有进行端口侦听的网络服务功能，所以要依靠python来提供这个功能。我们把下面的脚本命名为s.py，需要与server.php放在同一个目录下（/alidata/www/thrift）

#!/bin/py
#coding=utf-8

import os
import BaseHTTPServer
import CGIHTTPServer
# chdir(2) into the tutorial directory.
os.chdir(‘/alidata/www/thrift‘)
# 指定目录 ，如果目录错误 请求会失败
class Handler(CGIHTTPServer.CGIHTTPRequestHandler):
    cgi_directories  = [‘/‘]

BaseHTTPServer.HTTPServer((‘‘, 8080), Handler).serve_forever()

7、到现在为止，hello world级别的工程已经完成。

运行服务端s.py

运行客户端php client.php

便可以看到响应的实际效果

三、生产使用篇

hello world级别的工程，只有一个进程进行侦听和服务，在多核CPU的时代，只有一个进程不但无法充分利用CPU的性能，也无法为用户提供最高效的服务。

方案一：用php自己实现网络服务方案（这是一个牛人写的多进程服务demo，完全可以参照） http://blog.csdn.net/flynetcn/article/details/47837975

<?php  
/** 
 * 多进程形式的server. 
 * @package thrift.server 
 * @author flynetcn 
 */  
namespace Thrift\Server;  
  
use Thrift\Server\TServer;  
use Thrift\Transport\TTransport;  
use Thrift\Exception\TException;  
use Thrift\Exception\TTransportException;  
  
class TMultiProcessServer extends TServer  
{  
    /** 
     * 捕获的信号编号 
     */  
    static $catchQuitSignal = 0;  
  
    /** 
     * worker进程数量 
     */  
    private $workProcessNum = 4;  
  
    /** 
     * 每个worker进程处理的最大请求数 
     */  
    private $maxWorkRequestNum = 2000;  
  
    /** 
     * 当前worker进程已处理的请求数 
     */  
    private $currentWorkRequestNum = 0;  
      
    /** 
     * 当前连接调用次数 
     */  
    private $currentConnectCallNum = 0;  
  
    /** 
     * 发送超时 
     */  
    private $sendTimeoutSec = 1;  
  
    /** 
     * 接收超时 
     */  
    private $recvTimeoutSec = 1;  
  
    /** 
     * 当前进程pid 
     */  
    private $pid = 0;  
  
    /** 
     * Flag for the main serving loop 
     */  
    private $stop_ = false;  
  
    /** 
     * List of children. 
     */  
    protected $childrens = array();  
  
    /** 
     * 服务器日志文件 
     */  
    protected static $logFiles;  
    protected static $pidFile;  
  
    /** 
     * run 
     */   
    public function serve($daemon=false, array $config=array())  
    {  
        if (isset($config[‘workProcessNum‘])) {  
            $this->workProcessNum = intval($config[‘workProcessNum‘]);  
        }  
        if ($this->workProcessNum < 1) {  
            self::log(1, "child workProcessNum can not be less than 1");  
            throw new TException(‘child workProcessNum can not be less than 1‘);  
        }  
        if (isset($config[‘maxWorkRequestNum‘])) {  
            $this->maxWorkRequestNum = intval($config[‘maxWorkRequestNum‘]);  
        }  
        if ($this->maxWorkRequestNum < 1) {  
            self::log(1, "child maxWorkRequestNum can not be less than 1");  
            throw new TException(‘child maxWorkRequestNum can not be less than 1‘);  
        }  
        if (isset($config[‘sendTimeoutSec‘])) {  
            $this->sendTimeoutSec = intval($config[‘sendTimeoutSec‘]);  
        }  
        if (isset($config[‘recvTimeoutSec‘])) {  
            $this->recvTimeoutSec = intval($config[‘recvTimeoutSec‘]);  
        }  
        if ($daemon) {  
            $this->daemon();  
            $this->registerSignalHandler();  
            self::$logFiles = isset($config[‘logFiles‘]) && is_array($config[‘logFiles‘]) ? $config[‘logFiles‘] : array();  
            self::$pidFile = isset($config[‘pidFile‘]) ? $config[‘pidFile‘] : ‘‘;  
            declare(ticks=3);  
        }  
        $this->pid = posix_getpid();  
        self::createPidFile($this->pid);  
        self::log(0, "manage process({$this->pid}) has started");  
        $this->transport_->listen();  
        while (!$this->stop_) {  
            while ($this->workProcessNum > 0) {  
                try {  
                    $pid = pcntl_fork();  
                    if ($pid > 0) {  
                        $this->handleParent($pid, $this->workProcessNum);  
                    } else if ($pid === 0) {  
                        $this->pid = posix_getpid();  
                        $this->handleChild($this->workProcessNum);  
                    } else {  
                        self::log(1, "Failed to fork");  
                        throw new TException(‘Failed to fork‘);  
                    }  
                    $this->workProcessNum--;  
                } catch (Exception $e) {  
                }  
            }  
            $this->collectChildren();  
            sleep(2);  
            if (\Thrift\Server\TMultiProcessServer::$catchQuitSignal) {  
                $this->stop();  
            }  
        }  
    }  
      
    public function getCurrentWorkRequestNum()  
    {  
        return $this->currentWorkRequestNum;  
    }  
      
    public function getCurrentConnectCallNum()  
    {  
        return $this->currentConnectCallNum;  
    }  
  
    /** 
     * Code run by the parent 
     * 
     * @param int $pid 
     * @param int $num 进程编号 
     * @return void 
     */  
    private function handleParent($pid, $num)  
    {  
        $this->childrens[$pid] = $num;  
    }  
  
    /** 
     * Code run by the child. 
     * 
     * @param int $num 进程编号 
     * @return void 
     */  
    private function handleChild($num)  
    {  
        self::log(0, "child process($this->pid) has started");  
        $this->childrens = array();  
        while (!$this->stop_) {  
            try {  
                $transport = $this->transport_->accept();  
                if ($transport != null) {  
                    $transport->setSendTimeout($this->sendTimeoutSec * 1000);  
                    $transport->setRecvTimeout($this->recvTimeoutSec * 1000);  
                    $this->currentWorkRequestNum++;  
                    $this->currentConnectCallNum = 0;  
                    $inputTransport = $this->inputTransportFactory_->getTransport($transport);  
                    $outputTransport = $this->outputTransportFactory_->getTransport($transport);  
                    $inputProtocol = $this->inputProtocolFactory_->getProtocol($inputTransport);  
                    $outputProtocol = $this->outputProtocolFactory_->getProtocol($outputTransport);  
                    while ($this->processor_->process($inputProtocol, $outputProtocol)) {  
                        $this->currentConnectCallNum++;  
                    }  
                    @$transport->close();  
                }  
            } catch (TTransportException $e) {  
            } catch (Exception $e) {  
                self::log(1, $e->getMessage().‘(‘.$e->getCode().‘)‘);  
            }  
            if (\Thrift\Server\TMultiProcessServer::$catchQuitSignal) {  
                $this->stop();  
            }  
            if ($this->currentWorkRequestNum >= $this->maxWorkRequestNum) {  
                self::log(0, "child process($this->pid) has processe {$this->currentWorkRequestNum} requests will be exit");  
                $this->stop();  
                break;  
            }  
        }  
        exit(0);  
    }  
  
    /** 
     * Collects any children we may have 
     * 
     * @return void 
     */  
    private function collectChildren()  
    {  
        foreach ($this->childrens as $pid => $num) {  
            if (pcntl_waitpid($pid, $status, WNOHANG) > 0) {  
                unset($this->childrens[$pid]);  
                $this->workProcessNum++;  
            }  
        }  
    }  
  
    /** 
     * @return void 
     */  
    public function stop()  
    {  
        $this->transport_->close();  
        $this->stop_ = true;  
        foreach ($this->childrens as $pid => $num) {  
            if (!posix_kill($pid, SIGTERM)) {  
            }  
        }  
    }  
  
    /** 
     * 附加信号处理 
     */  
    public static function sig_handler($signo)  
    {  
        switch ($signo) {  
            case SIGTERM:  
            case SIGHUP:  
            case SIGQUIT:  
            case SIGTSTP:  
                $pid = posix_getpid();  
                self::log(0, "process($pid) catch signo: $signo");  
                \Thrift\Server\TMultiProcessServer::$catchQuitSignal = $signo;  
                break;  
            default:  
        }  
    }  
  
    /** 
     * 附加信号处理 
     */  
    private function registerSignalHandler()  
    {  
        pcntl_signal(SIGTERM, ‘\Thrift\Server\TMultiProcessServer::sig_handler‘);  
        pcntl_signal(SIGHUP, ‘\Thrift\Server\TMultiProcessServer::sig_handler‘);  
        pcntl_signal(SIGQUIT, ‘\Thrift\Server\TMultiProcessServer::sig_handler‘);  
        pcntl_signal(SIGTSTP, ‘\Thrift\Server\TMultiProcessServer::sig_handler‘);  
        declare(ticks=3);  
    }  
  
    /** 
     * 附加守护进程方式 
     */  
    private function daemon()  
    {  
        if (!function_exists(‘posix_setsid‘)) {  
            return;  
        }  
        if (($pid1 = pcntl_fork()) != 0) {  
            exit;  
        }  
        posix_setsid();  
        if (($pid2 = pcntl_fork()) != 0) {  
            exit;  
        }  
    }  
  
    public static function log($type, $msg)  
    {  
        static $fds;  
        $msg = date(‘Y-m-d H:i:s‘)." $type {$msg}\n";  
        if (isset(self::$logFiles[$type]) && self::$logFiles[$type]) {  
            if (file_exists(self::$logFiles[$type])) {  
                if (empty($fds[$type])) {  
                    $fds[$type] = fopen(self::$logFiles[$type], ‘a‘);  
                }  
                if (!$fds[$type]) {  
                    $fds[$type] = fopen(‘php://stdout‘, ‘w‘);  
                    fwrite($fds[$type], date(‘Y-m-d H:i:s‘)." WARNING fopen(".self::$logFiles[$type].") failed\n");  
                }  
            } else {  
                if (!is_dir(dirname(self::$logFiles[$type])) && !mkdir(dirname(self::$logFiles[$type]), 0755, true)) {  
                    $fds[$type] = fopen(‘php://stdout‘, ‘w‘);  
                    fwrite($fds[$type], date(‘Y-m-d H:i:s‘)." WARNING mkdir(".self::$logFiles[$type].") failed\n");  
                } elseif (!($fds[$type] = fopen(self::$logFiles[$type], ‘a‘))) {  
                    $fds[$type] = fopen(‘php://stdout‘, ‘w‘);  
                    fwrite($fds[$type], date(‘Y-m-d H:i:s‘)." WARNING fopen(".self::$logFiles[$type].") failed\n");  
                }  
            }  
        } else {  
            $fds[$type] = fopen(‘php://stdout‘, ‘w‘);  
        }  
        $ret = fwrite($fds[$type], $msg);  
        if (!$ret && self::$logFiles[$type]) {  
            fclose($fds[$type]);  
            $fds[$type] = fopen(self::$logFiles[$type], ‘a‘);  
            $ret = fwrite($fds[$type], $msg);  
        }  
        return true;  
    }  
  
    public static function createPidFile($pid=0)  
    {  
        if (!$pid) {  
            $pid = posix_getpid();  
        }  
        if (file_exists(self::$pidFile)) {  
            $fd = fopen(self::$pidFile, ‘w‘);  
            if (!$fd) {  
                self::log(1, "fopen(".self::$pidFile.") failed");  
                return false;  
            }  
        } else {  
            if (!is_dir(dirname(self::$pidFile)) && !mkdir(dirname(self::$pidFile), 0755, true)) {  
                self::log(1, "mkdir(".self::$pidFile.") failed");  
                return false;  
            } elseif (!($fd = fopen(self::$pidFile, ‘w‘))) {  
                self::log(1, "fopen(".self::$pidFile.") failed");  
                return false;  
            }  
        }  
        if (!fwrite($fd, "$pid")) {  
            self::log(1, "fwrite(".self::$pidFile.",$pid) failed");  
            return false;  
        }  
        fclose($fd);  
        return  true;  
    }  
}

方案二：方案一固然不错，但是因为没有实践的检验，所以用起来还是有一点担心的。所以，个人建议采用workman的thrift方案，请参考：http://www.workerman.net/workerman-thrift

1、因为要使用多进程，所以需要先安装pcntl扩展。（安装过程很简单，不是重点，不详细描述过程）

2、workman-thrift下载解压后，目录中Applications/ThriftRpc/Services存放的自己的服务端服务，即业务接口If、自定义数据类型Type和业务接口的实现。

3、根目录下的start.php加载并运行了Applications下的各个服务的start.php文件

4、解压后的目录中Applications/ThriftRpc是一个HelloWorld服务的demo。

5、现在，看Applications/ThriftRpc/start.php中的关键代码：

$worker = new ThriftWorker(‘tcp://0.0.0.0:9090‘);
$worker->count = 16;
$worker->class = ‘HelloWorld‘;

这里，设置了侦听的IP与端口、设置了服务进程数量与服务的类

6、查看Applications/ThriftPrc/ThriftWorker.php中的关键代码：

// 载入该服务下的所有文件
foreach(glob(THRIFT_ROOT . ‘/Services/‘.$this->class.‘/*.php‘) as $php_file)
{
    require_once $php_file;
}

// 检查类是否存在
$processor_class_name = "\\Services\\".$this->class."\\".$this->class.‘Processor‘;
if(!class_exists($processor_class_name))
{
    ThriftWorker::log("Class $processor_class_name not found" );
    return;
}
        
// 检查类是否存在
$handler_class_name ="\\Services\\".$this->class."\\".$this->class.‘Handler‘;
if(!class_exists($handler_class_name))
{
    ThriftWorker::log("Class $handler_class_name not found" );
    return;
}

根据第5步指定的class，在ThriftWorker中会载入对应路径下的所有php文件进行检查，并检查对应的Processor和Handler类是否存在。最终创建Handler和Processor

7、运行根目录下的php start.php start，可以看到

技术分享

恭喜，服务端运行成功。

8、关于客户端

复制 http://www.workerman.net/workerman-thrift 上的客户端代码，即可正常运行。

<?php  // 引入客户端文件
require_once __DIR__.‘/Applications/ThriftRpc/Clients/ThriftClient.php‘;
use ThriftClient\ThriftClient;

// 传入配置，一般在某统一入口文件中调用一次该配置接口即可
thriftClient::config(
    array(
        ‘HelloWorld‘ => array(
            ‘addresses‘ => array(
                ‘127.0.0.1:9090‘,
                ‘127.0.0.2:9191‘,
            ),
            ‘thrift_protocol‘ => ‘TBinaryProtocol‘,//不配置默认是TBinaryProtocol，对应服务端HelloWorld.conf配置中的thrift_protocol
            ‘thrift_transport‘ => ‘TBufferedTransport‘,//不配置默认是TBufferedTransport，对应服务端HelloWorld.conf配置中的thrift_transport
        ),
        ‘DInfoCenter‘ => array(
            ‘addresses‘ => array(
                ‘127.0.0.1:9090‘,
            ),
            ‘thrift_protocol‘ => ‘TBinaryProtocol‘,//不配置默认是TBinaryProtocol，对应服务端HelloWorld.conf配置中的thrift_protocol
            ‘thrift_transport‘ => ‘TBufferedTransport‘,//不配置默认是TBufferedTransport，对应服务端HelloWorld.conf配置中的thrift_transport
        ),
    )
);
// =========  以上在WEB入口文件中调用一次即可  ===========


// =========  以下是开发过程中的调用示例  ==========

// 初始化一个HelloWorld的实例
$client = ThriftClient::instance(‘HelloWorld‘);

// --------同步调用实例----------
var_export($client->sayHello(‘JIM‘);
//var_export($client->recv_request("req",strval(time())));

// --------异步调用示例-----------
/*
// 异步调用 之 发送请求给服务端（注意：异步发送请求格式统一为 asend_XXX($arg),既在原有方法名前面增加‘asend_‘前缀）
$client->asend_sayHello("JERRY");
$client->asend_sayHello("KID");

// 这里是其它业务逻辑
sleep(1);

// 异步调用 之 接收服务端的回应（注意：异步接收请求格式统一为 arecv_XXX($arg),既在原有方法名前面增加‘arecv_‘前缀）
var_export($client->arecv_sayHello("KID"));
var_export($client->arecv_sayHello("JERRY"));
*/