Numerical pagination for supplemental SearchWP engine

pagination.php

<!-- begin pagination -->
<?php if( $engine->maxNumPages > 1 ) : 
  echo '<nav class="pagination"><ul>';
  $max = intval( $engine->maxNumPages );

  /**ID of your custom search results page here**/
  $permalink = get_permalink(479); 
  $prevPage = $swppg > 1 ? $swppg - 1 : false;
  $nextPage = $swppg < $engine->maxNumPages ? $swppg + 1 : false;

  /** Add current page to the array */
  if ( $swppg >= 1 )
    $links[] = $swppg;

  /** Add the pages around the current page to the array */
  if ( $swppg >= 3 ) {
    $links[] = $swppg - 1;
    $links[] = $swppg - 2;
  }

  if ( ( $swppg + 2 ) <= $max ) {
    $links[] = $swppg + 2;
    $links[] = $swppg + 1;
  } 

  /** Previous Post Link */
  if ( $prevPage )
    printf( '<li><a href="%s?swpquery=%s&swppg=%s">%s</a></li>',$permalink, $query, $prevPage,'&laquo; Prev' );

  /** Link to first page, plus ellipses if necessary */
  if ( ! in_array( 1, $links ) ) {
    $class = 1 == $swppg ? ' class="active"' : '';

    printf( '<li%s><a href="%s?swpquery=%s&swppg=%s">%s</a></li>', $class, $permalink, $query, 1,1 );

    if ( ! in_array( 2, $links ) )
      echo '<li>&hellip;</li>';
  }

  /** Link to current page, plus 2 pages in either direction if necessary */
  sort( $links );
  foreach ( (array) $links as $link ) {
    $class = $swppg == $link ? ' class="active"' : '';
    printf( '<li%s><a href="%s?swpquery=%s&swppg=%s">%s</a></li>', $class, $permalink, $query, $link, $link );
  }

  /** Link to last page, plus ellipses if necessary */
  if ( ! in_array( $max, $links ) ) {
    if ( ! in_array( $max - 1, $links ) )
      echo '<li>…</li>' . "\n";

      $class = $swppg == $max ? ' class="active"' : '';
      printf( '<li%s><a href="%s?swpquery=%s&swppg=%s">%s</a></li>', $class, $permalink, $query, $max, $max );
    }

    /** Next Post Link */
    if ( $nextPage )
      printf( '<li><a href="%s?swpquery=%s&swppg=%s">Next &raquo;</a></li>',$permalink, $query, $nextPage );

  echo "</ul></nav>";
endif;?>
<!--end pagination-->