本程序实现了对具有优先功能的计算器的编写，支持括号等功能的优化计算器。-This procedure has a priority on the implementation of the calculator function of the preparation, support brackets, such as optimizing the calculator function.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001197s ]
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:0.087773s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001172s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001911s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001150s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003727s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001019s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003279s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014679s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001277s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 141127 [ RunTime:0.001307s ]
