实现了基本的邮件收发及用户管理功能，
包括好友管理、用户管理、邮件管理等-Realize the basic send and receive messages and user management functions, including the Friends management, user management, mail management, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002018s ]
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:0.088120s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002733s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001965s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002378s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003647s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002168s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003195s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014678s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002469s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 259332 [ RunTime:0.001247s ]
