Fix to work when wordpress installed in its own subdirectory

[martignoni]

Function site_url doesn't work when WP is installed in a subdirectory.

[martignoni]

Unfortunately, this does not work as described :-( Closing, and sorry for the spam. Hopefully a solution can be found for my situation, though.

[martignoni]

Re-tested. Proposed fix indeed works. Reopening. Sorry for the spam.

[bjoerne2]

@martignoni You replace site_url with home_url. According the docs https://codex.wordpress.org/Function_Reference/site_url site_url seems the correct one when WP is installed in a directory.
But maybe in your case home_url makes sense. Could you describe your use case and why you need the change?

[martignoni]

@bjoerne2 I use this guide https://codex.wordpress.org/Giving_WordPress_Its_Own_Directory (method I, using same URL). The whole idea is to install WP into a subdirectory, but have the website served from the website root.

Without replacing site_url with home_url, your plugin fails in this case, since it returns the Site directory URL (eg. http://www.example.com/wp), instead of the Home URL (eg. http://www.example.com), as indicated in the docs you cite (https://codex.wordpress.org/Function_Reference/site_url).