回文数的判断，输入一个字符串，不考虑标点符号和空格，只考虑字母或数字，判断它是否回文数-palindrome number of judgment, the importation of a string of not punctuation and spaces, only letters or numbers, to judge whether it palindrome number
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002444s ]
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:0.094794s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001191s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001298s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001166s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003162s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001639s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007835s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015024s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001162s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 132383 [ RunTime:0.017836s ]
