WordPress主题中添加文章列表页页码导航的PHP代码实例

Mike

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。

function Bing_get_pagenavi( $query = false, $num = false, $before = '<ARticle class="pagenavi postlistpagenavi">', $after = '</article>', $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' => __( '&laquo; 首页', 'Bing' ), 
  'last_text' => __( '尾页 &raquo;', 'Bing' ), 
  'next_text' => __( '&raquo;', 'Bing' ), 
  'prev_text' => '&laquo;', 
  '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 '<span class="pages">' . $pages_text . '</span>'; 
  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 '<a href="' . esc_url( get_pagenum_link() ) . '" class="first" title="' . $first_page_text . '">' . $first_page_text . '</a>'; 
  } 
  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 '<a href="' . esc_url( get_pagenum_link( $i ) ) . '" class="page" title="' . $page_text . '">' . $page_text . '</a>'; 
    } 
  } 
  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 '<span class="current">' . $current_page_text . '</span>'; 
    }else{ 
    $page_text = str_replace( '%PAGE_NUMBER%', number_format_i18n( $i ), $options['page_text'] ); 
    echo '<a href="' . esc_url( get_pagenum_link( $i ) ).'" class="page" title="' . $page_text . '">' . $page_text . '</a>'; 
    } 
  } 
  if( empty( $query ) ) echo '<span id="next-page">'; 
  next_posts_link( $options['next_text'], $max_page ); 
  if( empty( $query ) ) echo '</span>'; 
  } 
  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 '<a href="' . esc_url( get_pagenum_link( $i ) ).'" class="page" title="' . $page_text . '">' . $page_text . '</a>'; 
  } 
  } 
  if( $end_page < $max_page ){ 
  $last_page_text = str_replace( '%TOTAL_PAGES%', number_format_i18n( $max_page ), $options['last_text'] ); 
  echo '<a href="' . esc_url( get_pagenum_link( $max_page ) ) . '" class="last" title="' . $last_page_text . '">' . $last_page_text . '</a>'; 
  } 
  echo $after; 
}

然后在需要使用分页导航的地方添加下边的代码：
?

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