php socket客户端及服务器端应用实例

经常有朋友会对php的socket应用充满疑惑，本文就以实例代码作一讲解，希望能对初学php的朋友起到一点帮助作用

具体代码如下：

1.服务器端代码:

$name=$val;
  }
  private function _showError($error){
    exit($error);
  }
  
  public function start(){
    // 创建端口
    if (($sock = socket_create ( AF_INET, SOCK_STREAM, SOL_TCP )) === false) {
      $this->_showError("socket_create() failed :reason:" . socket_strerror ( socket_last_error () ));
    }
    // 绑定
    if (socket_bind ( $sock, $this->_address, $this->_port ) === false) {
      $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ));
    }
    // 监听
    if (socket_listen ( $sock, 5 ) === false) {
      $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ) );
    }
    do {
      //当有一个客户端连接的时候
      if ($client_socket=socket_accept ( $sock )) {
 $count = count ( $this->_client_socket_list ) + 1;
 //把新来的用户加入 客户端数组里
 $this->_client_socket_list[]=$client_socket;
 echo "new connection:rn";//服务器端输出当前正在连接的客户端数量
 echo "current connection:{$count}rn";
 //接受客户端传过来的字符串
 $msg=$this->read($client_socket);
 echo "client:{$msg}rn";
 //服务器向客户端传值
 $my_msg="I am fine,think yourn";
 $this->send($client_socket,$my_msg);
      }
      
    }while(true);  
  }
  
  public function send($client_socket,$str){ 
    return socket_write ( $client_socket,$str, strlen ( $str ) );
  }
  
  public function read($client_socket){
    return socket_read ( $client_socket, 8192 );//8192实际代表的接受长度,我用819292表示长一点,这样长一点的字符串也可以接受到,不到8192也没关系,会自动识别
  }
}
$socket_server =new SocketServer();
$socket_server->start();//开始监听

2.客户端代码:

$name=$val;
  }
  private function _showError($error){
    exit($error);
  }
  
  public function start(){
    // 创建端口
    if (($sock = socket_create ( AF_INET, SOCK_STREAM, SOL_TCP )) === false) {
      $this->_showError("socket_create() failed :reason:" . socket_strerror ( socket_last_error () ));
    }
    // 绑定
    if (socket_bind ( $sock, $this->_address, $this->_port ) === false) {
      $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ));
    }
    // 监听
    if (socket_listen ( $sock, 5 ) === false) {
      $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ) );
    }
    do {
      //当有一个客户端连接的时候
      if ($client_socket=socket_accept ( $sock )) {
 $count = count ( $this->_client_socket_list ) + 1;
 //把新来的用户加入 客户端数组里
 $this->_client_socket_list[]=$client_socket;
 echo "new connection:rn";//服务器端输出当前正在连接的客户端数量
 echo "current connection:{$count}rn";
 //接受客户端传过来的字符串
 $msg=$this->read($client_socket);
 echo "client:{$msg}rn";
 //服务器向客户端传值
 $my_msg="I am fine,think yourn";
 $this->send($client_socket,$my_msg);
      }
      
    }while(true);  
  }
  
  public function send($client_socket,$str){ 
    return socket_write ( $client_socket,$str, strlen ( $str ) );
  }
  
  public function read($client_socket){
    return socket_read ( $client_socket, 8192 );//8192实际代表的接受长度,我用819292表示长一点,这样长一点的字符串也可以接受到,不到8192也没关系,会自动识别
  }
}
$socket_server =new SocketServer();
$socket_server->start();//开始监听

注意事项:服务器端请用CLI模式运行,cgi模式会超时,这是新手常喜欢犯的错误。那么什么是CLI模式呢？简单的说就是用命令行去执行,而不要用游览器打开,否则会超时的！