基于 C/S 模式的 Socket 编程 两个程序，一个是客户机程序，一个是服务器程序
Server 端向 Client 端提供两种服务：数学计算服务和反序字符串服务-Based on C/S mode Socket programming two programs, one is the client program, one is the server program Server-side Client-side to provide two services: Mathematics computing services and anti-order strings Service
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.016798s ]
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:0.229080s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001347s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001929s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001532s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003981s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001259s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003499s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015915s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001224s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 197903 [ RunTime:0.001227s ]
