只有3个设置：
1、起始时间自己更改一下。’2014-1-01′
2、然后就是控制随机生成在那个日期段。500
3、文章的起始ID和结束ID。6297 AND 14332
UPDATE `wp_posts` SET `post_date` = DATE_ADD(‘2014-1-01’, INTERVAL ROUND(RAND() * 500 + 1) DAY) WHERE `ID` between 6297 AND 14332;
update `wp_posts` set `post_modified` = `post_date` WHERE `ID` between 6297 AND 14332;
update `wp_posts` set `post_date_gmt` = `post_date` WHERE `ID` between 6297 AND 14332;
update `wp_posts` set `post_modified_gmt` = `post_modified` WHERE `ID` between 6297 AND 14332;
update `wp_posts` set `post_status` = ‘publish’ WHERE `ID` between 6297 AND 14332;
然后再数据库里执行就可以了。