Wp Next and Previous Links Codex without plugin

Another option for the code above would be to create a function as shown below:

<br /> <*?php function getPrevNext(){ $pagelist = get_pages('sort_column=menu_order&sort_order=asc'); $pages = array(); foreach ($pagelist as $page) { $pages[] = $page->ID;<br /> }<br /> $current = array_search(get_the_ID(), $pages);<br /> $prevID = $pages[$current-1];<br /> $nextID = $pages[$current 1];</p> <p> echo ‘</p> <div class="navigation">‘;</p> <p> if (!empty($prevID)) {<br /> echo ‘</p> <div class="alignleft">‘;<br /> echo ‘<a href="'; echo get_permalink($prevID); echo '"'; echo 'title="'; echo get_the_title($prevID); echo'">Previous</a>‘;<br /> echo “</div> <p>“;<br /> }<br /> if (!empty($nextID)) {<br /> echo ‘</p> <div class="alignright">‘;<br /> echo ‘<a href="'; echo get_permalink($nextID); echo '"'; echo 'title="'; echo get_the_title($nextID); echo'">Next</a>‘;<br /> echo “</div> <p>“;<br /> }<br /> } </p> <p>?*></p> <p>

You can add such function in the bottom of your page.php file so you can call the ‘Previous / Next’ links calling the function like shown below:
Use:

</p> <p><*?php getPrevNext(); ?*></p> <p>
remove * from the code
if you are out of a php block. or use:
</p> <p>getPrevNext();<br />

if you are inside of a php block.