php与java通过socket通信的实现代码

demo实现的简单功能是，接受PHP端写入的字符串，然后原样返回给输出端。代码如下：

import java.io.*; 
import java.net.*; public class Server { 
public static void main(String[] args) throws IOException{ 
  System.out.println("Server started !\n"); 
  ServerSocket server=new ServerSocket(5678); 
  while (true){ 
                Socket client=server.accept(); 
                System.out.println("client coming!\n"); 
                PrintWriter printer = new PrintWriter(client.getOutputStream()); 
                BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream())); 
                String  m = reader.readLine(); 
                System.out.println("get infomation " + m + "\n from " + client.getInetAddress().toString()); 
                printer.println(m); 
                printer.flush(); 
                printer.close(); 
                printer.close(); 
                client.close(); 
                System.out.println("client leaving!\n"); 
              } 
        } 
}

运行起来，以后该java程序将监听5678端口，当接收到消息以后，将接收的消息原样返回给客户端……
PHP的代码如下：

<?php 
    $socket = socket_create ( AF_INET, SOCK_STREAM, SOL_TCP ) or die ( 'could not create socket' ); 
    $connect = socket_connect ( $socket, '127.0.0.1', 5678 ); 
    //向服务端发送数据 
    socket_write ( $socket, 'Hello' . "\n" ); 
    //接受服务端返回数据 
    $str = socket_read ( $socket, 1024, PHP_NORMAL_READ );     echo $str; 
    //关闭 
    socket_close($socket);

PHP程序连接本机的5678端口，写入 Hello，然后读取返回的数据……将返回的数据，输出到浏览器……
先运行起java的服务端，然后用浏览器访问PHP页面，将看到从服务器端返回的Hello