该函数用于对图像进行腐蚀运算。结构元素为水平方向或垂直方向的三个点，中间点位于原点。-The function used for computing the corrosion images. Structural elements for the horizontal direction or vertical direction of the three points, between points located at the origin.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001070s ]
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:0.102284s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001069s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001203s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001007s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003085s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000939s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005762s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015195s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001304s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 161837 [ RunTime:0.016809s ]
