lt1.php(做为现在的主流开发语言):
该程序为整个系统的入口，含有两个全局参数：chat_hh,uname分别记录当前最大的发言序号和发言者名称
session_start();
session_register(chat_hh);
session_register(uname);
//取数据库最大编号
include(g_fun.php(做为现在的主流开发语言));
f_connectdb();
$query  = select max(lt_id) as rmaxid from lt_t_content;
$res = mysql(和php搭配之最佳组合)_query($query, $dbh);  
$row = mysql(和php搭配之最佳组合)_fetch_array($res);
$f_chat_hh =  $row[rmaxid];
if (empty($f_chat_hh)) { $f_chat_hh = 0; }
if ($f_chat_hh > 12 ) {
   $chat_hh=$f_chat_hh - 12;
} else
$chat_hh=$f_chat_hh;
$un_len=strlen($name);
$uname=$name;
//增加在线人员信息
$query  = select count(*) as rcount from lt_t_online where lt_username = .$name.;
$res = mysql(和php搭配之最佳组合)_query($query, $dbh);  
$row = mysql(和php搭配之最佳组合)_fetch_array($res);
$lcount =  $row[rcount];
if ($lcount == 0) {
   $query  = insert into lt_t_online(lt_username,lt_lasttime) values(;
   $query .= .$name.,now());
   $res = mysql(和php搭配之最佳组合)_query($query, $dbh);  
}
$query  = update lt_t_online set lt_lasttime = now(),lt_state = 0 ;
$query .= where lt_username = .$name.;
$res = mysql(和php搭配之最佳组合)_query($query, $dbh);  
?>
php(做为现在的主流开发语言)无刷新感聊天室