简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Rumah > php教程 > php手册 > teks badan

php socket通信演示以及socket操作类，phpsocket

WBOY
Lepaskan： 2016-06-13 08:40:46
asal
1198 orang telah melayarinya

php socket通信演示以及socket操作类，phpsocket

　　

　　准备做Java的课程设计，一个通讯录。采用C/S架构。客户端用java FX和Java，服务器端用php，采用socket通信。

　　下面来讲一讲php的socket通信：

　　讲之前，得先讲一下TCP/IP，UDP。随着互联网应用的日益广泛，相信很多人或多或少都听说过这些协议，那么到底它们是什么呢？

　　1、什么是TCP/IP、UDP？

         TCP/IP（Transmission Control Protocol/Internet Protocol）即传输控制协议/网间协议，是一个工业标准的协议集，它是为广域网（WANs）设计的。TCP/IP协议族包括运输层、网络层、链路层。
         UDP（User Data Protocol，用户数据报协议）是与TCP相对应的协议。它是属于TCP/IP协议族中的一种。

            下面我们上图直观地展示一下它们的关系：

               

 　　这里并没有socket什么事，那socket到底在哪里呢？又有什么用？别急，接下来我们就来介绍一下socket与它们的关系。同样上图。

　　　　　　
　　　　现在明白它们的关系了吧。那socket到底是什么？又有什么用？

       2、socket是什么？有什么用？

　　　　Socket是应用层与TCP/IP协议族通信的中间软件抽象层，它是一组接口。在设计模式中，Socket其实就是一个门面模式，它把复杂的TCP/IP协议族隐藏在Socket接口后面，对用户来说，一组简单的接口就是全部，让Socket去组织数据，以符合指定的协议。

       既然socket是一组封装好的接口，那我们如何去运用它来通信呢？具体是一个什么流程呢？我们可以详细一下我们打电话的过程。首先我们的电话肯定是处于监听状态的，没错吧。如果不是，那肯定也不会接到别人打的电话。当被人打电话过来时，首先是先拨号，号码是目标，也是唯一的。拨号后电话会开始连接，接通了之后就可以开始交谈，聊完了之后要挂断电话，这样别人才能再打通这个号码。 socket也是一样的，服务器端要先建立socket监听自己电脑某个端口，当有客户端创建socket发起连接请求时接受，这样就可以开始传递信息了，传输完之后再把socket关闭。当然，服务器端也可以主动向客户端发起连接请求然后开始通信。这是区别于ajax，是可以双向通信的。下面看图：

　　　　　　　　

　　先从服务器端说起。服务器端先初始化Socket，然后与端口绑定(bind)，对端口进行监听(listen)，调用accept阻塞，等待客户端连接。在这时如果有个客户端初始化一个Socket，然后连接服务器(connect)，如果连接成功，这时客户端与服务器端的连接就建立了。客户端发送数据请求，服务器端接收请求并处理请求，然后把回应数据发送给客户端，客户端读取数据，最后关闭连接，一次交互结束

 

       3、socket的相关函数 ：

socket_accept() 接受一个Socket连接
socket_bind() 把socket绑定在一个IP地址和端口上
socket_clear_error() 清除socket的错误或最后的错误代码
socket_close() 关闭一个socket资源
socket_connect() 开始一个socket连接
socket_create_listen() 在指定端口打开一个socket监听
socket_create_pair() 产生一对没有差别的socket到一个数组里
socket_create() 产生一个socket，相当于产生一个socket的数据结构
socket_get_option() 获取socket选项
socket_getpeername() 获取远程类似主机的ip地址
socket_getsockname() 获取本地socket的ip地址
socket_iovec_add() 添加一个新的向量到一个分散/聚合的数组
socket_iovec_alloc() 这个函数创建一个能够发送接收读写的iovec数据结构
socket_iovec_delete() 删除一个已分配的iovec
socket_iovec_fetch() 返回指定的iovec资源的数据
socket_iovec_free() 释放一个iovec资源
socket_iovec_set() 设置iovec的数据新值
socket_last_error() 获取当前socket的最后错误代码
socket_listen() 监听由指定socket的所有连接
socket_read() 读取指定长度的数据
socket_readv() 读取从分散/聚合数组过来的数据
socket_recv() 从socket里结束数据到缓存
socket_recvfrom() 接受数据从指定的socket，如果没有指定则默认当前socket
socket_recvmsg() 从iovec里接受消息
socket_select() 多路选择
socket_send() 这个函数发送数据到已连接的socket
socket_sendmsg() 发送消息到socket
socket_sendto() 发送消息到指定地址的socket
socket_set_block() 在socket里设置为块模式
socket_set_nonblock() socket里设置为非块模式
socket_set_option() 设置socket选项
socket_shutdown() 这个函数允许你关闭读、写、或指定的socket
socket_strerror() 返回指定错误号的周详错误
socket_write() 写数据到socket缓存
socket_writev() 写数据到分散/聚合数组

 

 

4、socket通信演示：

//服务器端：<br /><?<span>php
</span><span>//</span><span>确保在连接客户端时不会超时</span>
<span>set_time_limit</span>(0<span>);

</span><span>$ip</span> = '127.0.0.1'<span>;
</span><span>$port</span> = 1935<span>;

</span><span>/*</span><span>
 +-------------------------------
 *    @socket通信整个过程
 +-------------------------------
 *    @socket_create
 *    @socket_bind
 *    @socket_listen
 *    @socket_accept
 *    @socket_read
 *    @socket_write
 *    @socket_close
 +--------------------------------
 </span><span>*/</span>

<span>if</span>((<span>$sock</span> = socket_create(AF_INET,SOCK_STREAM,SOL_TCP)) < 0<span>) {
    </span><span>echo</span> "socket_create() 失败的原因是:".socket_strerror(<span>$sock</span>)."\n"<span>;
}

</span><span>if</span>((<span>$ret</span> = socket_bind(<span>$sock</span>,<span>$ip</span>,<span>$port</span>)) < 0<span>) {
    </span><span>echo</span> "socket_bind() 失败的原因是:".socket_strerror(<span>$ret</span>)."\n"<span>;
}

</span><span>if</span>((<span>$ret</span> = socket_listen(<span>$sock</span>,4)) < 0<span>) {
    </span><span>echo</span> "socket_listen() 失败的原因是:".socket_strerror(<span>$ret</span>)."\n"<span>;
}

</span><span>$count</span> = 0<span>;

</span><span>do</span><span> {
    </span><span>if</span> ((<span>$msgsock</span> = socket_accept(<span>$sock</span>)) < 0<span>) {
        </span><span>echo</span> "socket_accept() failed: reason: " . socket_strerror(<span>$msgsock</span>) . "\n"<span>;
        </span><span>break</span><span>;
    } </span><span>else</span><span> {
        
        </span><span>//</span><span>发到客户端</span>
        <span>$msg</span> ="测试成功！\n"<span>;
        socket_write(</span><span>$msgsock</span>, <span>$msg</span>, <span>strlen</span>(<span>$msg</span><span>));
        
        </span><span>echo</span> "测试成功了啊\n"<span>;
        </span><span>$buf</span> = socket_read(<span>$msgsock</span>,8192<span>);
        
        
        </span><span>$talkback</span> = "收到的信息:<span>$buf</span>\n"<span>;
        </span><span>echo</span> <span>$talkback</span><span>;
        
        </span><span>if</span>(++<span>$count</span> >= 5<span>){
            </span><span>break</span><span>;
        };
        
    
    }
    socket_close(</span><span>$msgsock</span><span>);

} </span><span>while</span> (<span>true</span><span>);

socket_close(</span><span>$sock</span><span>);
</span>?>
Salin selepas log masuk
//客户端<br /><?<span>php
</span><span>error_reporting</span>(<span>E_ALL</span><span>);
</span><span>set_time_limit</span>(0<span>);

</span><span>$ip</span> = "127.0.0.1"<span>;
</span><span>$port</span> = 1935<span>;
</span><span>/*</span><span>
 +-------------------------------
 *    @socket连接整个过程
 +-------------------------------
 *    @socket_create
 *    @socket_connect
 *    @socket_write
 *    @socket_read
 *    @socket_close
 +--------------------------------
 </span><span>*/</span>

<span>$socket</span> = socket_create(AF_INET, SOCK_STREAM,<span> SOL_TCP);
</span><span>if</span> (<span>$socket</span> < 0<span>) {
    </span><span>echo</span> "socket_create() failed: reason: " . socket_strerror(<span>$socket</span>) . "\n"<span>;
}</span><span>else</span><span> {
    </span><span>echo</span> "OK.\n"<span>;
}

</span><span>echo</span> "试图连接 '<span>$ip</span>' 端口 '<span>$port</span>'...\n"<span>;
</span><span>$result</span> = socket_connect(<span>$socket</span>, <span>$ip</span>, <span>$port</span><span>);
</span><span>if</span> (<span>$result</span> < 0<span>) {
    </span><span>echo</span> "socket_connect() failed.\nReason: (<span>$result</span>) " . socket_strerror(<span>$result</span>) . "\n"<span>;
}</span><span>else</span><span> {
    </span><span>echo</span> "连接OK\n"<span>;
}

</span><span>$in</span> = "Ho\r\n"<span>;
</span><span>$in</span> .= "first blood\r\n"<span>;
</span><span>$out</span> = ''<span>;

</span><span>if</span>(!socket_write(<span>$socket</span>, <span>$in</span>, <span>strlen</span>(<span>$in</span><span>))) {
    </span><span>echo</span> "socket_write() failed: reason: " . socket_strerror(<span>$socket</span>) . "\n"<span>;
}</span><span>else</span><span> {
    </span><span>echo</span> "发送到服务器信息成功！\n"<span>;
    </span><span>echo</span> "发送的内容为:<font color='red'><span>$in</span></font> <br>"<span>;
}

</span><span>while</span>(<span>$out</span> = socket_read(<span>$socket</span>, 8192<span>)) {
    </span><span>echo</span> "接收服务器回传信息成功！\n"<span>;
    </span><span>echo</span> "接受的内容为:",<span>$out</span><span>;
}


</span><span>echo</span> "关闭SOCKET...\n"<span>;
socket_close(</span><span>$socket</span><span>);
</span><span>echo</span> "关闭OK\n"<span>;
</span>?>
Salin selepas log masuk

　　注意：1）服务器端要用CLI方式运行，也就是命令行模式运行。不要用CGI方式（浏览器访问）;找到php.exe所在目录，然后运行以下代码，php 服务器文件；

　　　　

2）运行之后可以另开dos窗口下运行netstat -ano查看端口占用情况。

　　　　

　　5、把socket封装成类：

<span>//ServerSocket.class.php<br />//客户端socket操作类</span>
Salin selepas log masuk
<?<span>php
   </span><span>error_reporting</span>(<span>E_ALL</span><span>);
   </span><span>set_time_limit</span>(0<span>);
   
   </span><span>class</span><span> ServerSocket {
        </span><span>private</span> <span>$server_host</span>;  <span>//</span><span>服务器IP</span>
     <span>private</span> <span>$server_port</span>;  <span>//</span><span>服务器端口</span>
     <span>private</span> <span>$client_host</span>;  <span>//</span><span>客户端IP</span>
     <span>private</span> <span>$client_port</span>;  <span>//</span><span>客户端端口</span>
     <span>private</span> <span>$create_socket</span>=<span>null</span><span>;   
     </span><span>private</span> <span>$accept_socket</span>=<span>null</span><span>;
     </span><span>private</span> <span>$get_data</span>=""<span>;
     </span><span>private</span> <span>$send_data</span>=""<span>;    
     
     </span><span>//</span><span>够造函数</span>
     <span>public</span> <span>function</span> __construct(<span>$host</span>,<span>$port</span><span>){
         </span><span>if</span>(!<span>extension_loaded</span>("socket"<span>)){
             </span><span>exit</span>("请先打开socket扩展！"<span>);
         }
         </span><span>if</span>(<span>empty</span>(<span>$host</span><span>)) 
             </span><span>exit</span>("请输入目标主机IP！"<span>);
         </span><span>if</span>(<span>empty</span>(<span>$port</span><span>))
             </span><span>exit</span>("请输入有效端口号！"<span>);
         </span><span>$this</span>->server_host=<span>$host</span><span>;
         </span><span>$this</span>->server_port=<span>$port</span><span>;
         </span><span>$this</span>-><span>CreateSocket();
     }
     
     </span><span>//</span><span>创建一个socket并将其用来绑定监听端口</span>
     <span>private</span> <span>function</span><span> createSocket(){
           </span><span>if</span>(<span>$this</span>->create_socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)==<span>false</span><span>){
                 </span><span>echo</span> "socket_create() failed. reason:".socket_strerror(socket_last_error())."\n"<span>;
           }
           </span><span>if</span>(socket_bind(<span>$this</span>->create_socket,<span>$this</span>->server_host,<span>$this</span>->server_port)==<span>false</span><span>){
               </span><span>echo</span> "socket_bind()failed. reason:".socket_strerror(socket_last_error(<span>$this</span>->create_socket))."\n"<span>;
           }
           </span><span>if</span>(socket_listen(<span>$this</span>->create_socket,5)==<span>false</span><span>){
               </span><span>echo</span> "socket_listen()failed. reason:".socket_strerror(socket_last_error(<span>$this</span>->create_socket))."\n"<span>;
           }        
     }
     
     </span><span>//</span><span>向目标主机发起连接</span>
     <span>public</span> <span>function</span><span> connectClient(){
         </span><span>if</span>(socket_getpeername(<span>$this</span>->create_socket,<span>$this</span>->client_host,<span>$this</span>->client_port)==<span>null</span><span>){
             </span><span>echo</span> "socket_getpeername()failed. reason:".socket_strerror(socket_last_error(<span>$this</span>->create_socket))."\n"<span>;
         }
         </span><span>if</span>(socket_connect(<span>$this</span>->create_socket,<span>$this</span>->client_host,<span>$this</span>->client_port)==<span>false</span><span>){
             </span><span>echo</span> "socket_connect()failed. reason:".socket_strerror(socket_last_error(<span>$this</span>->create_socket))."\n"<span>;
         }
     }
     </span><span>//</span><span>接受连接获取到一个socket资源，想客户端读取以及传输信息</span>
     <span>public</span> <span>function</span><span> wr(){
         </span><span>do</span>{   <span>//</span><span>循环防止阻塞延迟</span>
             <span>if</span>(<span>$this</span>->accept_socket=socket_accept(<span>$this</span>->create_socket)==<span>null</span><span>){
                 </span><span>echo</span> "socket_accept()failed. reason:".socket_strerror(socket_last_error(<span>$this</span>->create_socket))."\n"<span>;
                 </span><span>break</span><span>;
             }
             
             </span><span>$this</span>->get_data = socket_read(<span>$this</span>->accept_socket, 8192<span>);
             </span><span>$this</span>->send_data=<span>$this</span>->operateData(<span>$this</span>-><span>get_data);
             </span><span>if</span> (socket_write(<span>$this</span>->accept_socket,<span>$this</span>->send_data, <span>strlen</span>(<span>$this</span>->send_data))==<span>false</span><span>) {
                 </span><span>echo</span> "socket_write() failed reason:" . socket_strerror(socket_last_error(<span>$this</span>->accept_socket)) ."\n"<span>;
             }
             socket_close(</span><span>$this</span>-><span>accept_socket);
         }</span><span>while</span>(<span>true</span><span>);          
     }
     
     </span><span>//</span><span>数据处理</span>
     <span>private</span> <span>function</span><span> operateData(){
         
         </span><span>return</span><span> ;
     }
     
     </span><span>//</span><span>关闭监听socket</span>
     <span>private</span> <span>function</span><span> closeSocket(){
         socket_close(</span><span>$this</span>-><span>createSocket);
     }
     
     </span><span>//</span><span>析构函数</span>
     <span>public</span> <span>function</span><span>  __destruct(){
          </span><span>$this</span>-><span>closeSocket();
     }
   }
  
   
   </span>
Salin selepas log masuk
<span>//</span><span>ClientSocket.class.php
//客户端socke操作类</span>

<span>class</span><span> Socket {
    </span><span>private</span> <span>$host</span>;<span>//</span><span>连接socket的主机</span>
    <span>private</span> <span>$port</span>;<span>//</span><span>socket的端口号 </span>
    <span>private</span> <span>$error</span>=<span>array</span><span>();
    </span><span>private</span> <span>$socket</span>=<span>null</span>;<span>//</span><span>socket的连接标识</span>
    <span>private</span> <span>$queryStr</span>="";<span>//</span><span>发送的数据</span>
    <span>public</span> <span>function</span> __construct(<span>$host</span>,<span>$port</span><span>) {
        </span><span>if</span>(!<span>extension_loaded</span>("sockets"<span>)){
            </span><span>exit</span>("请打开socket扩展 "<span>);
        }
        </span><span>if</span>(<span>empty</span>(<span>$host</span>)) <span>exit</span>("请输入目标地址"<span>);
        </span><span>if</span>(<span>empty</span>(<span>$port</span>)) <span>exit</span>("请输入有效的端口号"<span>);
        </span><span>$this</span>->host=<span>$host</span><span>;
        </span><span>$this</span>->port=<span>$port</span><span>;
        </span><span>$this</span>->CreateSocket();<span>//</span><span>创建连接        </span>
<span>    }

    </span><span>//</span><span>创建socket</span>
    <span>private</span> <span>function</span><span> CreateSocket(){
        </span>!<span>$this</span>->socket&&<span>$this</span>->socket=socket_create(AF_INET, SOCK_STREAM, SOL_TCP);<span>//</span><span>创建socket</span>
        <span>$r</span>=@socket_connect(<span>$this</span>->socket,<span>$this</span>->host,<span>$this</span>-><span>port);
        </span><span>if</span>(<span>$r</span><span>){
            </span><span>return</span> <span>$r</span><span>;
        }</span><span>else</span><span>{
            </span><span>$this</span>->error[]=socket_last_error(<span>$this</span>-><span>socket);
            </span><span>return</span> <span>false</span><span>;
        }
    }

    </span><span>//</span><span>向socket服务器写入数据并读取</span>
    <span>public</span> <span>function</span> wr(<span>$contents</span><span>){
        </span><span>$this</span>->queryStr=""<span>;
        </span><span>$this</span>->queryStr=<span>$contents</span><span>;
        </span>!<span>$this</span>->socket&&<span>$this</span>-><span>CreateSocket();
        </span><span>$contents</span>=<span>$this</span>->fliterSendData(<span>$contents</span><span>);
        </span><span>$result</span>=socket_write(<span>$this</span>->socket,<span>$contents</span>,<span>strlen</span>(<span>$contents</span><span>));
        </span><span>if</span>(!<span>intval</span>(<span>$result</span><span>)){
            </span><span>$this</span>->error[]=socket_last_error(<span>$this</span>-><span>socket);
            </span><span>return</span> <span>false</span><span>;
        }
        </span><span>$response</span>=socket_read(<span>$this</span>->socket,12048<span>);
        </span><span>if</span>(<span>false</span>===<span>$response</span><span>){
            </span><span>$this</span>->error[]=socket_last_error(<span>$this</span>-><span>socket);
            </span><span>return</span> <span>false</span><span>;
        }
        </span><span>return</span> <span>$response</span><span>;
    }

    </span><span>//</span><span>对发送的数据进行过滤</span>
    <span>private</span> <span>function</span> fliterSendData(<span>$contents</span><span>){
        </span><span>//</span><span>对写入的数据进行处理</span>
        <span>return</span> <span>$contents</span><span>;
    }

    </span><span>//</span><span>所有错误信息 </span>
    <span>public</span> <span>function</span><span> getError(){
        </span><span>return</span> <span>$this</span>-><span>error;
    }

    </span><span>//</span><span>最后一次错误信息</span>
    <span>public</span> <span>function</span><span> getLastError(){
        </span><span>return</span> <span>$this</span>->error(<span>count</span>(<span>$this</span>-><span>error));
    }
    
    </span><span>//</span><span>获取最后一次发送的消息</span>
    <span>public</span> <span>function</span><span> getLastMsg(){
        </span><span>return</span> <span>$this</span>-><span>queryStr;
    }

    </span><span>public</span> <span>function</span><span> getHost(){
        </span><span>return</span> <span>$this</span>-><span>host;
    }

    </span><span>public</span> <span>function</span><span> getPort(){
        </span><span>return</span> <span>$this</span>-><span>port;
    }

    </span><span>//</span><span>关闭socket连接</span>
    <span>private</span> <span>function</span><span> close(){
        </span><span>$this</span>->socket&&socket_close(<span>$this</span>->socket);<span>//</span><span>关闭连接</span>
        <span>$this</span>->socket=<span>null</span>;<span>//</span><span>连接资源初始化</span>
<span>    }

    </span><span>public</span> <span>function</span><span> __destruct(){
        </span><span>$this</span>-><span>close();
    }
}</span>
Salin selepas log masuk

 

Label berkaitan：
socket
sumber：php.cn
Artikel sebelumnya：odbc连接数据库，odbc数据库 Artikel seterusnya：php pdo操作数据库，phppdo数据库
Kenyataan Laman Web ini
Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn
Artikel terbaru oleh pengarang
Isu terkini
Lancarkan penyemak imbas telus untuk meningkatkan pengalaman aplikasi web dan PWA [menyokong HTML statik, CSS dan JavaScript] [membenarkan pengguna melihat kertas dinding desktop dalam aplikasi web/PWA kami] Saya seorang pembangun dan pereka bentuk hadapan junior yang sedang membangunkan aplikasi ...
daripada 2024-04-05 13:50:12
0
1
1367
Topik-topik yang berkaitan
Lagi>
Cadangan popular
Tutorial Popular
Lagi>
Tutorial berkaitan
Cadangan popular
Kursus terkini
Muat turun terkini
Lagi>
kesan web
Kod sumber laman web
Bahan laman web
Templat hujung hadapan
Tentang kita Penafian Sitemap
Laman web PHP Cina：Latihan PHP dalam talian kebajikan awam，Bantu pelajar PHP berkembang dengan cepat！