This article explains how to reverse the order of WordPress page navigation links.
To reverse the default (backward) order of page navigation in WordPress, open the file
template-functions-links.php (in WP 2.0) or
link-template.php (in WP 2.1/2.2) and scroll down to the last function,
posts_nav_link()1. Next, find the last
if statement and switch the order of the following two lines:
previous_posts_link($prelabel); [ ignore this line ] next_posts_link($nxtlabel, $max_page);
Next, within the first line of the same function (beginning with
function posts_nav_link), switch the order of the variables
$prelabel='« Previous Page' and
$nxtlabel='Next Page »'.
Finally, within the loop, make sure you are calling the function with the usual parameters in place. Something like:
<?php posts_nav_link(' | ','« Previous Entries','Next Entries »') ?>
That’s it! Your post navigation links (for index and category views) should now operate according to the following principle: left links point to older posts and right links post to newer posts.
1 Not to be confused with
next_post_link(), which provide navigational links to older individual posts and newer individual posts, respectively. Oddly enough, in the case of post-by-post navigation, WordPress gets it right: left links point to older posts and right links post to newer posts; however, this is not the case with page-by-page navigation, in which WordPress adopts the reverse strategy. For more information, check out WordPress Post Navigation Redux (New Tags!).