主要实现功能有：
1、 在线访客统计
2、 呢称修改功能
3、 信息发送功能
4、 信息接收功能
5、 聊天记录保存功能(IE)-Main features are: 1, online visitor statistics 2, Nickname modify function 3, messaging function 4, the information receiving function of 5, chat history saving function (IE)
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001313s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.326279s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.008230s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002393s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.018677s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005264s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.005937s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006739s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.047522s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.112988s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 225343 [ RunTime:0.041778s ]
