实例讲解PHP Socket网络操作类定义与用法-php教程-PHP中文网

实例讲解PHP Socket网络操作类定义与用法

巴扎黑

发布： 2023-03-15 17:26:01

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这篇文章主要介绍了PHP Socket网络操作类定义与用法,结合实例形式分析了php socket网络操作类的定义及结合ajax发送查询请求等相关使用技巧,需要的朋友可以参考下

本文实例讲述了PHP Socket网络操作类定义与用法。分享给大家供大家参考，具体如下：

web前端测试：

<html>
<head>
  <title>test</title>
  <script>
  g_xmlHttpReq = new XMLHttpRequest();
  function onReplyCallback()
  {
    if(g_xmlHttpReq.readyState==4 && g_xmlHttpReq.status==200)
    {
      alert(g_xmlHttpReq.responseText);
    }
  }
  function on_stop_service()
  {
    var cmd = document.getElementById("inCmd").value;
    g_xmlHttpReq.open("GET","./service/main.php?cmd=" + cmd,true);
    g_xmlHttpReq.onreadystatechange=onReplyCallback;
    g_xmlHttpReq.send(null);
  }
  </script>
</head>
<body>
<input type="text" id="inCmd">
<hr>
<button onclick="on_stop_service()">关闭服务</button>
</body>
</html>

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mysocket.php：

<?php
class Connector
{
  public static $instance=null;
  public $conn;
  private function __construct()
  {
      set_time_limit(0);
      $ip = &#39;192.168.238.1&#39;;
      $port = 8888;
      if(($this->conn = socket_create(AF_INET,SOCK_STREAM,SOL_TCP)) < 0)
      {
        echo "socket_create() 失败的原因是:".socket_strerror($this->conn)."\n";
      }
      $result = socket_connect($this->conn, $ip, $port);
      if ($result < 0) {
        echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\n";
      }else {
        echo "连接OK\n";
      }
  }
  public static function getInstance()
  {
    if(is_null(self::$instance))
    {
      self::$instance = new Connector;
    }
    return self::$instance;
  }
  public function sendMsg($msg)
  {
    socket_write($this->conn,$msg);
  }
  public function getMsg()
  {
    $clients = array($this->conn);
    while(true)
    {
      $read = $clients;
      $wrSet = NULL;
      $errSet = NULL;
      if(socket_select($read, $wrSet,$errSet, 3) < 1)
      {
        continue;
      }
      foreach($read as $read_sock)
      {
        $data = @socket_read($read_sock,1024,PHP_BINARY_READ);
        socket_close($this->conn);
        return $data;
      }
    }
  }
}
?>

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main.php(调用场所)：

<?php
require_once(&#39;mysocket.php&#39;);
$con = Connector::getInstance();
$req = $_GET[&#39;cmd&#39;];
$con->sendMsg($req);
$ret = $con->getMsg();
echo $ret;
?>

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应用说明：

客户端ajax发起请求调用Php，然后php借助socket进一步发起请求给C++模块。

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