这是非常好的关于网络编程的例子，实现了ping程序，对于学习网络编程的人员来说是非常难得的材料。-It is a very good example of programming on the network to achieve the ping process, for learning network programming staff is very rare material.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001685s ]
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:0.105515s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001271s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001290s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003665s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001059s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.025982s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001982s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 298647 [ RunTime:0.001520s ]
