Thanks, TSGuitar.
Thank you for figuring that out. I appreciate it. I didn't try that method because there were two things I didn't like: First, it isn't adaptable to anywhere outside the loop; you can't, say, use it in the page title. Second, I don't want the current page number linked to itself.
Instead, I put the subject on the back burner for a while and let my subconscious chew on it. Ultimately, the solution came to me, which I turned into a plugin (I'll release it officially at some point in the near future):
<?php
/*
Plugin Name: PSB Paged Posts Number
Plugin URI:
Description: Adds a tag to display the current page number of multi-page posts (for example: in the post title, the page title, or wherever).
Author: Pariah S. Burke
Version: 0.1
Author URI: http://www.iampariah.com
*/
function psb_pagednumber()
{
global $wp_query;
if ((($page = $wp_query->get("paged")) || ($page = $wp_query->get("page"))) && $page > 1) {
echo ' PAGE '.$page . '';
}
}
?>
With that plugin activated, open single.php and/or index.php, find the following line:
<a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a>
And insert this immediately after it:
<?php if(function_exists('psb_pagednumber')) { psb_pagednumber(); } ?>
Now, if the post is NOT multipage, nothing will happen. If the post IS multipaged, the title will be appended with "Page X"--but only AFTER the first page of the post. So, you'll never see "My Post Page 1"; just "My Post Page 2," "My Post Page 3," and so on.
It's a great cue to readers who come into a post after the first page, which is pretty common with traffic from search engines.
The plugin call can also be inserted into the HTML page title like so:
<title><?php if(is_single()) { ?><?php wp_title(''); ?><?php if(function_exists('psb_pagednumber')) { psb_pagednumber(); } ?> — <?php } ?><?php bloginfo('name'); ?></title>
