计算时间的剩余值。起倒计时的作用，很准确的计算剩余的秒数，并有进度条的剩余显示-The residual value of computing time. Play the role of the countdown, it is an accurate calculation of the number of seconds remaining, and have the progress bar shows the remaining
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001390s ]
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:0.095717s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001654s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003487s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001836s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006510s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001399s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003443s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019017s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001955s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 229099 [ RunTime:0.001833s ]
