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?qū)⒈O(jiān)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(fā)送數(shù)據(jù) 
    socket_write ( $socket, 'Hello' . "\n" ); 
    //接受服務端返回數(shù)據(jù) 
    $str = socket_read ( $socket, 1024, PHP_NORMAL_READ ); 

    echo $str; 
    //關(guān)閉 
    socket_close($socket);

PHP程序連接本機的5678端口，寫入 Hello，然后讀取返回的數(shù)據(jù)……將返回的數(shù)據(jù)，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

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