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I am trying to install wordpress in a subfolder of an existing wordpress installation. I created a the subfolder /wp unziped a fresh Wordpress download inside of that directory and added a .htaccess with the following content:

RewriteEngine On
RewriteBase /wp/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wp/index.php [L]

However if I visit mysite.com/wp I get an error 404 not found. I already tried the following: Restarting Apache and adding the .htaccess content to the root .htaccess. But it did not help.

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7
  • Have you confirmed that the /wp subdirectory is included in the WordPress config? What happens when you request example.com/wp/ (with a trailing slash)? I would expect no difference, however, if you omit the trailing slash then you are relying on mod_dir issuing a 301 redirect to append the trailing slash (which is dependent on the DirectorySlash directive). And what if you request example.com/wp/index.php directly? Again that avoids mod_dir having to issue an internal subrequest to the DirectoryIndex. So it's really just ruling our server config issues.
    – MrWhite
    May 23 '19 at 8:07
  • @MrWhite I tried example.com/wp/index.php but I am still redirected to the theme default error 404 page. Also the request in the network tab is showing me error 404 in the header.
    – Mango D
    May 23 '19 at 8:49
  • @MrWhite And what do you mean by "confirmed that the /wp subdirectory is included in the WordPress config"? Adding a trailing slash doesn't provide me any difference in the result.
    – Mango D
    May 23 '19 at 8:59
  • Under WordPress "General Settings", the "WordPress Address (URL)" and "Site Address (URL)" should both include the /wp subdirectory.
    – MrWhite
    May 23 '19 at 11:47
  • @MrWhite I cant check that because Wordpress is not installed yet. Or do you mean the root installation? I tried to add define('WP_HOME','http://new.spirigarchitektur.ch/wp'); and define('WP_SITEURL','http://new.spirigarchitektur.ch/wp');. But it did not help.
    – Mango D
    May 24 '19 at 6:26
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I didn't work with Apache for quite a while, so this is untested. RewriteBase is the base for your rewrite, so it's added to your rule automatically and your .htaccess should look something like this:

RewriteEngine On
RewriteBase /wp/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php [L]

Look here for further explanation: https://stackoverflow.com/questions/704102/how-does-rewritebase-work-in-htaccess

Also, you probably want to only put that in the .htaccess file inside your /wp directory.

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5
  • There's actually no real difference between these directives and the OP's directives in the question. With the OP's directives the RewriteBase directive is redundant since the /wp subdirectory is hardcoded in the RewriteRule substitution. With your directives it will rewrite to /wp/index.php (making use of RewriteBase) - the net result is the same. In fact, in your code, the RewriteBase directive could be removed entirely (when the .htaccess file is located inside the /wp subdirectory).
    – MrWhite
    May 23 '19 at 7:55
  • If the .htaccess is in the subdirectory, the RewriteBase does not make much sense, right. If it's in the root directory, the OP's directive would lead to rewrites that duplicate the /wp which will not work. For instance /wp/some-page would be rewritten to /wp/wp/some-page
    – Christopher
    May 23 '19 at 14:08
  • "If the .htaccess is in the subdirectory, the RewriteBase does not make much sense, right." - it does make sense, it's just that it's not necessarily required here. "/wp/some-page would be rewritten to /wp/wp/some-page" - not with the OP's directives. The RewriteBase only applies to relative path substitutions (ie. paths that do not start with a protocol or a slash). In the OP's case the RewriteBase directive is effectively ignored since the substitution string (/wp/index.php) is not considered "relative".
    – MrWhite
    May 24 '19 at 8:51
  • However, it transpires from comments above, that WordPress isn't actually installed yet. So, I'm not sure what is going on?
    – MrWhite
    May 24 '19 at 8:52
  • In that case - mea culpa. I should think more before writing ...
    – Christopher
    May 24 '19 at 15:38

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