Home > Article > Backend Development > Examples explaining the definition and usage of PHP Socket network operation classes

Examples explaining the definition and usage of PHP Socket network operation classes

巴扎黑Original: 2017-09-01 16:51:111454browse

This article mainly introduces the definition and usage of the PHP Socket network operation class. It analyzes the definition of the PHP Socket network operation class in the form of examples and related usage skills such as sending query requests in combination with ajax. Friends in need can refer to it

The examples in this article describe the definition and usage of PHP Socket network operation classes. Share it with everyone for your reference, the details are as follows:

web front-end test:

<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>

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;
      }
    }
  }
}
?>

main.php (calling place):

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

Application description:

The client initiates an ajax request to call Php, and then PHP uses the socket to further initiate a request to the C++ module.

The above is the detailed content of Examples explaining the definition and usage of PHP Socket network operation classes. For more information, please follow other related articles on the PHP Chinese website!

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：Detailed explanation of PHP access to MySql database to implement addition, deletion, modification and query functionsNext article：Detailed explanation of PHP access to MySql database to implement addition, deletion, modification and query functions

See more

Examples explaining the definition and usage of PHP Socket network operation classes

Related articles