WordPress Pagination

pagination.php

<?php

if ( ! function_exists( 'pagination' ) ) :

  function pagination($pages = '') {

       global $paged;
       if(empty($paged)) $paged = 1;

       if($pages == '')
       {
           global $wp_query;
           $pages = $wp_query->max_num_pages;
           if(!$pages)
           {
               $pages = 1;
           }
       }

       if ( $paged === 1 || $paged === (int)$pages ) {
         $range = 4;
       } elseif ( $paged === 2 || $paged === ((int)$pages - 1) ) {
         $range = 3;
       } else {
         $range = 2;
       }

       $showitems = ($range * 2)+1;

       if(1 != $pages)
       {
           echo "<div class=\"pagination\">";
           if($paged > 2 && $paged > $range+1 && $showitems < $pages) echo "<a href='".get_pagenum_link(1)."'>First</a>";
           if($paged > 1 && $showitems < $pages) echo "<a href='".get_pagenum_link($paged - 1)."'><i class=\"icon-font-caret-left\"></i></a>";

           for ($i=1; $i <= $pages; $i++)
           {
               if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems ))
               {
                   echo ($paged == $i)? "<span class=\"current\">".$i."</span>":"<a href='".get_pagenum_link($i)."' class=\"inactive\">".$i."</a>";
               }
           }

           if ($paged < $pages && $showitems < $pages) echo "<a href=\"".get_pagenum_link($paged + 1)."\"><i class=\"icon-font-caret-right\"></i></a>";
           if ($paged < $pages-1 &&  $paged+$range-1 < $pages && $showitems < $pages) echo "<a href='".get_pagenum_link($pages)."'>Last</a>";
           echo "</div>\n";
       }
  }

endif;