采用行写方式的聊天程序（之五）_PHP教程

lt4.php
处理定时刷新问题

session_start();
include("g_fun.php");
f_connectdb();
$tmpi = 0;
$query = "select lt_id,lt_speaker,lt_face,lt_speaked,lt_time,lt_content from lt_t_content";
$query .= " where lt_id > ".$chat_hh. " order by lt_time ";
$res = mysql_query($query, $dbh);
while ($row = mysql_fetch_array($res)) {
?>


$tempi=$row[lt_id];
}
if ($tempi > $chat_hh) {
$chat_hh = $tempi;
}
?>

ltonline.php
处理在线用户信息

include("g_fun.php");
f_connectdb();
//删除长时间没有发言的用户信息
$query = "update lt_t_online set lt_state = 1 where (now() - lt_lasttime) > 500";
$res = mysql_query($query, $dbh);
print " 在线人员信息
";
$query = "select lt_username from lt_t_online where lt_state = 0";
$res = mysql_query($query, $dbh);
while ($row = mysql_fetch_array($res)) {
print $row["lt_username"].
;
}
?>

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