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'>";
?>