3 在线用户的信息扫描和更新在网页中使用内置框架来调用扫描和更新程序，这行也能在网页源代码里面看到！<iframe name=flush src="userflush.php" width="0" height="0" frameborder="0" scrolling="NO" marginwidth="0" marginheight="0" hspace="0" vspace="0"></iframe>4 信息扫描和更新程序 userflush.php<? session_start();mysql_connect("localhost","","");mysql_select_db("php2000");$delaytime=0;// 查找新的发言$query = "select * from forumtalk where readsign=0 and receiver="$name"";$result = mysql_query($query);if( mysql_num_rows($result) > 0){// 读取和显示弹出窗口$msg = mysql_fetch_array($result);$numberfriend = $msg["id"];echo "<script language=javascript>window.open("shortalk.php?action=view&talknumber=$numberfriend","_blank","width=300,height=250")</script>";}// 设置当前用户的最新时间标志，表示它在线mysql_query("update userinfo set currentdate=".date("U")." where name="$name"");// 设置刷新时间间隔为15秒echo "<meta http-equiv="refresh" content="15;url=userflush.php">";?>
