How to call next_post and previous_post only alphabetical?

I’m hoping someone more learned in the ways of PHP will write the code for me 🙂

I understand I can’t use previous_post and next_post, because these functions doesn’t support a parameter of order=alphabetical. I figure it’s only a few lines of PHP, but I have no idea how to write it. Could you help?

Would it be a Loop?

It seems like someone could write this code easily. I’ve already got a Page that lists all my posts in Alphabetical order. Now I just need the Single Post page to know what the next Post in alphabetical order is titled.

Here’s my custom query that shows an index of all the posts in alphabetical order:

<?php query_posts('orderby=title&order=asc&showposts=-1'); ?>
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<li><<a href="<?php the_permalink() ?>"><?php the_title(); ?></a></li>
<?php endwhile; ?><?php endif; ?>

Does that help-you help me?

Sorry to BUMP

One more request for help on this… Anyone can code it?

If not maybe I will rephrase the question and post again. I’m convinced this isn’t difficult for someone who knows how to write queries. I don’t know how yet. I’ll do you a favor in return as some kind of payback!

A+ response! Thanks for solving this request, Kafkaesqui. Very nice of you to make a plugin. I hope this suits someone else’s needs too (can’t believe I am the first to need this? Don’t people make cookbooks, poetry collections, movie reviews, glossaries, FAQ’s, etc. with WordPress? Alphabetical is useful!)

I’ve discovered one place where this plugin is tripped-up, in my particular case study.

On this series of Post Titles, for some reason it gets stuck in a loop between the slugs im-not-fit and im-waiting-for-the-man, such that it will not recognize the next post title should be ive-been-seeking. It sends me backwards at that point using next_post_title, from im-waiting back to im-not, instead of forward to ive-been. Any idea why? Not a deal-breaker though, still a good solution for most of my posts.

It messes up in a couple spots, seemingly related to apostrophes.

Where I typed normal apostrophe in the post title field, WP converted them to smart/fancy apostrophes… and simply omits the apostrophe in the post-slug. All that could have some effect?

This is a helpful plugin & much appreciated.