这是一个我写的ppm的编码器的代码，其中有个计数器没写对，不过总的思路是不错的，供大家借鉴-this is a ppm comlier,simple,and there is a small error in it which needs to change ,if i rewrite it,i will load it again
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001286s ]
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:0.088359s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001235s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001886s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001267s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003627s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001043s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003293s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016581s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001418s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 198256 [ RunTime:0.001439s ]
