Detailed explanation of php socket client and server application examples-PHP Tutorial-php.cn

Detailed explanation of php socket client and server application examples

怪我咯

Release： 2023-03-12 17:20:02

Original

1220 people have browsed it

This article mainly introduces php socket client and server-side application examples. Friends who need it can refer to it

Friends often have doubts about php socket applications. This article uses example code as an example. The explanation, I hope it can be helpful to friends who are new to php

The specific code is as follows:

1. Server-side code:

<?php
class SocketServer{
  private $_port=&#39;9000&#39;;
  private $_address=&#39;127.0.0.1&#39;;
  private $_client_socket_list=array();
  public function set($name,$val){
    $this--->$name=$val;
  }
  private function _showError($error){
    exit($error);
  }
  /**
   * 开始进行socket服务器端监听端口
   */
  public function start(){
    // 创建端口
    if (($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:\r\n";//服务器端输出当前正在连接的客户端数量
        echo "current connection:{$count}\r\n";
        //接受客户端传过来的字符串
        $msg=$this->read($client_socket);
        echo "client:{$msg}\r\n";
        //服务器向客户端传值
        $my_msg="I am fine,think you\r\n";
        $this->send($client_socket,$my_msg);
      }
      /**
       * 这段代码给你参考,用来判断是否有客户端主动失去连接
      else{
        foreach ( $this->_client_socket_list as $socket ) {
          $len = socket_recv ($socket, $buffer, 2048, 0 ); // 接受一下客户端信息,如果为0代表断开连接
          if ($len < 7) {
            //这里写是去连接的客户端业务
          }
        }
      }
       */
    }while(true);  
  }
  /**
   * 发送数据给客户端
   */
  public function send($client_socket,$str){ 
    return socket_write ( $client_socket,$str, strlen ( $str ) );
  }
  /**
   * 从客户端接受数据
   */
  public function read($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

Copy after login

2. Client code:

<?php
class SocketServer{
  private $_port=&#39;9000&#39;;
  private $_address=&#39;127.0.0.1&#39;;
  private $_client_socket_list=array();
  public function set($name,$val){
    $this--->$name=$val;
  }
  private function _showError($error){
    exit($error);
  }
  /**
   * 开始进行socket服务器端监听端口
   */
  public function start(){
    // 创建端口
    if (($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:\r\n";//服务器端输出当前正在连接的客户端数量
        echo "current connection:{$count}\r\n";
        //接受客户端传过来的字符串
        $msg=$this->read($client_socket);
        echo "client:{$msg}\r\n";
        //服务器向客户端传值
        $my_msg="I am fine,think you\r\n";
        $this->send($client_socket,$my_msg);
      }
      /**
       * 这段代码给你参考,用来判断是否有客户端主动失去连接
      else{
        foreach ( $this->_client_socket_list as $socket ) {
          $len = socket_recv ($socket, $buffer, 2048, 0 ); // 接受一下客户端信息,如果为0代表断开连接
          if ($len < 7) {
            //这里写是去连接的客户端业务
          }
        }
      }
       */
    }while(true);  
  }
  /**
   * 发送数据给客户端
   */
  public function send($client_socket,$str){ 
    return socket_write ( $client_socket,$str, strlen ( $str ) );
  }
  /**
   * 从客户端接受数据
   */
  public function read($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

Copy after login

Notes:Please run the server in CLI mode. The cgi mode will time out, which is a common mistake for novices. mistake. So what is CLI mode? To put it simply, use the command line to execute it, rather than opening it with a browser, otherwise it will time out!

The above is the detailed content of Detailed explanation of php socket client and server application examples. For more information, please follow other related articles on the PHP Chinese website!