问题
Usually in my PHP apps I have a base URL setup so I can do things like this
<a href="<?php echo BASE_URL; ?>tom/jones">Tom</a>
Then I can move my site from development to production and swap it easily and have the change go site wide (and it seems more reliable than <base href="" />.
I'm doing up a WordPress theme, and I am wondering, does WordPress have anything like this built in, or do I need to redefine my own?
I can see ABSPATH, but that is the absolute file path in the file system, not something from the document root.
回答1:
get_bloginfo('wpurl'); would be the preferred method of getting the base url of your WordPress installation. This always returns the absolute base url for the install where as get_bloginfo('url'); is for the actual blog address of your WordPress install.
回答2:
Yes, you can use get_bloginfo('url') just like that or define a constant...
define('BASE_URL', get_bloginfo('url'));
If you are working on a template and want the URL fragment to that theme folder, use...
bloginfo('template_directory');
回答3:
Yes you can get "base URL" with a simple function.
<?php echo get_bloginfo('url') ?>
after that with / you can reach to any page just type the page name.
回答4:
You can try using
<?php echo home_url(); ?>
By using this can get site url like www.xyz.com
<?php echo home_url('/contact'); ?>
By using this syntax you will get url like www.xyz.com/contact
来源：https://stackoverflow.com/questions/2848344/can-i-get-a-base-url-in-wordpress-within-a-template-file