SOCKET 點對點通信

要應用鍵盤輸入的一些知識如下例子：

<?php
fwrite(STDOUT, "Please input your name:\t");
echo $name = trim(fgets(STDIN));
fwrite(STDOUT, 'Hello ' . $name);
?>

點對點通信開始

1.SERVER

<?php
// 建立server端socket
$tcp = getprotobyname("tcp");
$socket = socket_create(AF_INET, SOCK_STREAM, $tcp);
socket_bind($socket, '127.0.0.1', 10008);       //綁定要監聽的端口
socket_listen($socket);       //監聽端口
$connection = socket_accept($socket);
if(!$connection){
    echo "connect fail";
}
$data = @socket_read($connection, 1024, PHP_NORMAL_READ);
printf("Client: " . $data);
//鍵盤輸入信息
while ($buffer= trim(fgets(STDIN))) {
    if($buffer =="bye") break;
    // 向客戶端傳遞一個信息數據
    socket_write($connection, $buffer . "\n");
    // 從客戶端取得信息
    $data = @socket_read($connection, 1024, PHP_NORMAL_READ);
    printf("Client : " . $data);
}
socket_close($connection);
//關閉 socket
printf("Closed the socket\n");

?>

2：CLIENT 

<?php
// 建立客戶端的socet連接
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$connection = socket_connect($socket, '127.0.0.1', 10008);    //連接服務器端socket
//鍵盤輸入信息
while ($data= trim(fgets(STDIN))) {
    if($data =="exit") break;
    // 將客戶的信息寫到通道中，傳給服務器端
    if (!socket_write($socket, $data."\n")) {
        echo "Write failed\n";
    }
    //服務器端收到信息後，給於的迴應信息
    $buffer = socket_read($socket, 1024, PHP_NORMAL_READ);
    if($buffer=="bye") break;
    echo "Server Data:" . $buffer;
}

?>