Get previous and next post in WordPress

WordPress provides a built-in function called get_adjacent_post() which can be used to retrieve the previous or next post in the same category as the current post. You can use this function inside a loop to exclude the current post from the loop.

Here’s an example of how you can use this function to retrieve the next post in the same category as the current post:

$next_post = get_adjacent_post(false, '', true);
if($next_post) {
  // Display the next post
}

You can also use the get_adjacent_post() function to retrieve the previous post in the same category as the current post by setting the third parameter to false.

$prev_post = get_adjacent_post(false, '', false);
if($prev_post) {
  // Display the previous post
}

You can also use the previous_post_link() and next_post_link() functions to easily display links to the previous and next posts in the same category as the current post. These functions will automatically exclude the current post from the loop.

if(get_previous_post_link()) {
  // Display a link to the previous post
  previous_post_link();
}

if(get_next_post_link()) {
  // Display a link to the next post
  next_post_link();
}