How to get next post ID ?

Believe this would work in the loop of your single.php

<?php
$adjacent_post = get_adjacent_post(false,'',false) ;
echo $adjacent_post->ID;
?>

Great, thanx!

and this code to previous post id

$adjacent_post = get_adjacent_post(true,'',true) ;

$adjacent_post = get_adjacent_post(true,'',true) ;
That would be for next post in category

More illustration:

$in_same_cat = false;
$excluded_categories = '';
$previous = true;
$previous_post = get_adjacent_post($in_same_cat,$excluded_categories,$previous)

$in_same_cat = false;
$excluded_categories = '';
$previous = false;
$next_post = get_adjacent_post($in_same_cat,$excluded_categories,$previous)

This is exactly what I’m looking for as well. However, I tried the exact code within my wordpress loop, and it didn’t return anything for me?

I’m running version 2.9.2

I also can’t find any documentation about the get_adjacent_post tag. Is this tag still supported in the current version of wordpress?

I realized that this only returns a result on the single permalink page. So I’m wondering if there is a way for this to work on the main page as well.

I figured out that adding this little bit of code:

$wp_query->is_single = true;

basically this will tell WP to treat the current page as a single page, even if it’s your home page or main page with multiple posts on the page.

Sweet, get_adjacent_post() is what I need as well. Thanks!

how does “$excluded_categories” work?