demo實現的簡單功能是，接受PHP端寫入的字符串，然后原樣返回給輸出端。代碼如下：

復制代碼 代碼如下:

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");
              }
        }
}

運行起來，以后該java程序將監聽5678端口，當接收到消息以后，將接收的消息原樣返回給客戶端……
PHP的代碼如下：

復制代碼 代碼如下:

<?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 );
    //向服務端發送數據
    socket_write ( $socket, 'Hello' . "/n" );
    //接受服務端返回數據
    $str = socket_read ( $socket, 1024, PHP_NORMAL_READ );

    echo $str;
    //關閉
    socket_close($socket);

PHP程序連接本機的5678端口，寫入 Hello，然后讀取返回的數據……將返回的數據，輸出到瀏覽器……
先運行起java的服務端，然后用瀏覽器訪問PHP頁面，將看到從服務器端返回的Hello