对内存的分配、释放和使用进行检查，以发现不合法指针，减少程序BUG- To the memory assignment, the release and the use carry on the
inspection, discovered the illegal indicator, reduces procedure
BUG
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001429s ]
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:0.096294s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001051s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001897s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001176s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003577s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000978s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003192s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024949s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001417s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 104113 [ RunTime:0.001401s ]
