该函数用来更新RTC中的时间，它仅有一个参数nowtime，是以秒数表示的当前时间。-This function is used to renew the RTC time.There is just a parameter nowtime,the current time denoted by seconds
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001347s ]
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:0.090588s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001240s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001908s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001262s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003583s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001056s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003312s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014248s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001486s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 302782 [ RunTime:0.001326s ]
