WordPress主题中添加文章列表页页码导航的PHP代码实例，

WordPress主题中添加文章列表页页码导航的PHP代码实例，

WordPress 默认给主题开发者的建议是在文章列表底部提供上下页按钮，所以没有提供直接用在文章列表下的分页导航的函数。这里我提供一个比较完善的分页导航函数。

/**
  *WordPress 文章列表分页导航
  *http://www.endskin.com/page-navi/
*/
function Bing_get_pagenavi( $query = false, $num = false, $before = '
', $after = '
', $options = array() ){
  global $wp_query;
  $options = wp_parse_args( $options, array(
    'pages_text' => '%CURRENT_PAGE%/%TOTAL_PAGES%',
    'current_text' => '%PAGE_NUMBER%',
    'page_text' => '%PAGE_NUMBER%',
    'first_text' => __( '« 首页', 'Bing' ),
    'last_text' => __( '尾页 »', 'Bing' ),
    'next_text' => __( '»', 'Bing' ),
    'prev_text' => '«',
    'dotright_text' => '...',
    'dotleft_text' => '...',
    'num_pages' => 5,
    'always_show' => 0,
    'num_larger_page_numbers' => 3,
    'larger_page_numbers_multiple' => 10
  ) );
  if( $wp_query->max_num_pages <= 1 || is_single() ) return;
  if( !empty( $query ) ){
    $request = $query->request;
    $numposts = $query->found_posts;
    $max_page = $query->max_num_pages;
    $posts_per_page = intval( $num );
  }else{
    $request = $wp_query->request;
    $numposts = $wp_query->found_posts;
    $max_page = $wp_query->max_num_pages;
    $posts_per_page = intval( get_query_var( 'posts_per_page' ) );
  }
  $paged = intval( get_query_var( 'paged' ) );
  if( empty( $paged ) || $paged == 0 ) $paged = 1;
  $pages_to_show = intval( $options['num_pages'] );
  $larger_page_to_show = intval( $options['num_larger_page_numbers'] );
  $larger_page_multiple = intval( $options['larger_page_numbers_multiple'] );
  $pages_to_show_minus_1 = $pages_to_show - 1;
  $half_page_start = floor( $pages_to_show_minus_1 / 2 );
  $half_page_end = ceil( $pages_to_show_minus_1 / 2 );
  $start_page = $paged - $half_page_start;
  if( $start_page <= 0 ) $start_page = 1;
  $end_page = $paged + $half_page_end;
  if( ( $end_page - $start_page ) != $pages_to_show_minus_1 ) $end_page = $start_page + $pages_to_show_minus_1;
  if( $end_page > $max_page ){
    $start_page = $max_page - $pages_to_show_minus_1;
    $end_page = $max_page;
  }
  if( $start_page <= 0 ) $start_page = 1;
  $larger_per_page = $larger_page_to_show * $larger_page_multiple;
  $larger_start_page_start = ( ( floor( $start_page / 10 ) * 10 ) + $larger_page_multiple ) - $larger_per_page;
  $larger_start_page_end = floor( $start_page / 10 ) * 10 + $larger_page_multiple;
  $larger_end_page_start = floor( $end_page / 10 ) * 10 + $larger_page_multiple;
  $larger_end_page_end = floor( $end_page / 10 ) * 10 + ( $larger_per_page );
  if( $larger_start_page_end - $larger_page_multiple == $start_page ){
    $larger_start_page_start = $larger_start_page_start - $larger_page_multiple;
    $larger_start_page_end = $larger_start_page_end - $larger_page_multiple;
  }
  if( $larger_start_page_start <= 0 ) $larger_start_page_start = $larger_page_multiple;
  if( $larger_start_page_end > $max_page ) $larger_start_page_end = $max_page;
  if( $larger_end_page_end > $max_page ) $larger_end_page_end = $max_page;
  if( $max_page > 1 || intval( $options['always_show'] ) == 1 ){
    $pages_text = str_replace( '%CURRENT_PAGE%', number_format_i18n( $paged ), $options['pages_text'] );
    $pages_text = str_replace( '%TOTAL_PAGES%', number_format_i18n( $max_page ), $pages_text);
    echo $before;
    if( !empty( $pages_text ) ) echo '' . $pages_text . '';
    if( $start_page >= 2 && $pages_to_show < $max_page ){
      $first_page_text = str_replace( '%TOTAL_PAGES%', number_format_i18n( $max_page ), $options['first_text'] );
      echo '' . $first_page_text . '';
    }
    if( $larger_page_to_show > 0 && $larger_start_page_start > 0 && $larger_start_page_end <= $max_page ){
      for( $i = $larger_start_page_start;$i < $larger_start_page_end;$i += $larger_page_multiple ){
        $page_text = str_replace( '%PAGE_NUMBER%', number_format_i18n( $i ), $options['page_text'] );
        echo '' . $page_text . '';
      }
    }
    previous_posts_link( $options['prev_text'] );
    for( $i = $start_page;$i <= $end_page;$i++ ){            
      if( $i == $paged ){
        $current_page_text = str_replace( '%PAGE_NUMBER%', number_format_i18n( $i ), $options['current_text'] );
        echo '' . $current_page_text . '';
      }else{
        $page_text = str_replace( '%PAGE_NUMBER%', number_format_i18n( $i ), $options['page_text'] );
        echo '' . $page_text . '';
      }
    }
    if( empty( $query ) ) echo '';
    next_posts_link( $options['next_text'], $max_page );
    if( empty( $query ) ) echo '';
  }
  if( $larger_page_to_show > 0 && $larger_end_page_start < $max_page ){
    for( $i = $larger_end_page_start;$i <= $larger_end_page_end;$i += $larger_page_multiple ){
      $page_text = str_replace( '%PAGE_NUMBER%', number_format_i18n( $i ), $options['page_text'] );
      echo '' . $page_text . '';
    }
  }
  if( $end_page < $max_page ){
    $last_page_text = str_replace( '%TOTAL_PAGES%', number_format_i18n( $max_page ), $options['last_text'] );
    echo '' . $last_page_text . '';
  }
  echo $after;
}

然后在需要使用分页导航的地方添加下边的代码：

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<?php if( function_exists( 'Bing_get_pagenavi' ) ) Bing_get_pagenavi(); ?>

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