Title: Four Digit Permalink Problem
Last modified: August 19, 2016

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# Four Digit Permalink Problem

 *  [Dennis Whiteman](https://wordpress.org/support/users/fastpipe/)
 * (@fastpipe)
 * [17 years, 8 months ago](https://wordpress.org/support/topic/four-digit-permalink-problem/)
 * I believe this already logged as [bug ID 7467](http://trac.wordpress.org/ticket/7467)
   in the Trac system for WordPress, but I need to get this working before 2.7 and
   it is as yet unresolved. So if someone could point me in the right direction,
   I might be able to fix this and contribute it back to the source.
 * Having migrated some posts from another system, I have a custom permalink system
   to preserve the old URLs as much as possible:
 * /content/%postname%/
 * During the migration, I’ve used an exist ID number as the postname so the permalinks
   are like this:
 * [http://www.site.com/content/1/](http://www.site.com/content/1/)
    [http://www.site.com/content/10/](http://www.site.com/content/10/)
   [http://www.site.com/content/100/](http://www.site.com/content/100/) [http://www.site.com/content/1000/](http://www.site.com/content/1000/)
   [http://www.site.com/content/10000/](http://www.site.com/content/10000/)
 * All of those work except the one with four digits where postname = 1000. I can
   use this URL ([http://www.site.com/?p=1000](http://www.site.com/?p=1000)) with
   permalinks turned off and it displays the correct post, but not the one using
   the custom permalink structure. Since I have about 42K posts, that means that
   roughly 20 percent of them return 404 not found pages.
 * I would think this problem originates in /wp-includes/rewrite.php and possibly
   here in lines 16-18…
 *     ```
       if (strlen($tagname) < 3 || $tagname{0} != '%' || $tagname{strlen($tagname)-1} != '%') {
       		return;
       	}
       ```
   
 * Anyone with experience hacking the original source that thinks this would fix
   the problem or who has a better idea for solving this issue until it’s officially
   resolved?
 * Thanks,
 * Dennis

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [Dennis Whiteman](https://wordpress.org/support/users/fastpipe/)
 * (@fastpipe)
 * [17 years, 8 months ago](https://wordpress.org/support/topic/four-digit-permalink-problem/#post-862337)
 * I’m still working on this problem, but it appears that the custom permalink structure
   I entered is being ignored in favor of providing a year-based permalink structure
   so…
 * [http://www.site.com/content/1000/](http://www.site.com/content/1000/)
 * …doesn’t work because I don’t have any posts added in the year 1000. However,
   I do have posts from 2007 so this displays posts from the year 2007…
 * [http://www.site.com/content/2007/](http://www.site.com/content/2007/)
 * …not post ID 2007. Obviously a bug of some kind that I working to fix at least
   on my installations, but I hope this gets resolved in the trunk…
 * Dennis
 *  Thread Starter [Dennis Whiteman](https://wordpress.org/support/users/fastpipe/)
 * (@fastpipe)
 * [17 years, 8 months ago](https://wordpress.org/support/topic/four-digit-permalink-problem/#post-862357)
 * Just as an addendum for anyone trying to solve this problem in the future, there
   are several existing bugs that have been filed on this issue.
 * In my case, I’m able to work around it by using post_id instead of postname as
   the slug.
 * /content/% post_id%/
 * This does not affect pages and only affects about 20 or so posts that I’m not
   going to directly link to anyway.
 * Dennis

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Four Digit Permalink Problem’ is closed to new replies.

## Tags

 * [permalinks](https://wordpress.org/support/topic-tag/permalinks/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 1 participant
 * Last reply from: [Dennis Whiteman](https://wordpress.org/support/users/fastpipe/)
 * Last activity: [17 years, 8 months ago](https://wordpress.org/support/topic/four-digit-permalink-problem/#post-862357)
 * Status: not resolved

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