采用行写方式的聊天程序（之四）_PHP教程

（接前面部分）










lt3.php(做为现在的主流开发语言)
处理发言信息

session_start();
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);
$maxid = $row["rmaxid"];
if (empty($maxid)) { $maxid = 0; }
$maxid = $maxid + 1;
//增加聊天信息
$query = "insert into lt_t_content(lt_id,lt_speaker,lt_speaked,lt_secrecy,lt_content,lt_time,lt_face)";
$query .= " values(".$maxid.",".$username.",".$towho.",1,".$oldsays.",now(),1)";
$res = MySQL(和PHP搭配之最佳组合)_query($query, $dbh);

//修改最后聊天时间,判断用户是否存在，防止超时被删除
$query = "select count(*) as rcount from lt_t_online where lt_username = ".$username."";
$res = MySQL(和PHP搭配之最佳组合)_query($query, $dbh);
$row = MySQL(和PHP搭配之最佳组合)_fetch_array($res);
$lcount = $row["rcount"];
if ($lcount == 0) {

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