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PHP socket network operation class

不言Original: 2018-04-26 14:40:011266browse

This article shares with you the code of the socket network operation class in php. Friends who are interested can take a look at the content of this article

## Web front-end testing

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

Related recommendations:

Detailed explanation of SOCKET programming in PHP

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Detailed explanation of socket communication in php

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