数组为8位char型数值，通过该函数可以计算出数组的16位循环校验码。-Array for the 8-bit char type values can be calculated through the function of an array of 16 cycle parity-check codes.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002659s ]
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:0.093883s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002252s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002155s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002356s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005236s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002883s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005395s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016430s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002886s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 234898 [ RunTime:0.002437s ]
