WordPress有原生的文章置顶功能，不过只支持在首页让置顶文章在顶部显示，其他如分类页、标签页、作者页和日期页等存档页面，就没法让置顶文章在顶部显示了，只能按默认的顺序显示。如何才能实现存档页面置顶文章呢？
将下面的代码添加到主题的 functions.php 文件即可：
add_filter('the_posts', 'putStickyOnTop' );function putStickyOnTop( $posts ) {if(is_home() || !is_main_query() || !is_archive())return $posts;global $wp_query; $sticky_posts = get_option('sticky_posts');if ( $wp_query->query_vars['paged'] <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !get_query_var('ignore_sticky_posts') ) { $stickies1 = get_posts( array( 'post__in' => $sticky_posts ) );foreach ( $stickies1 as $sticky_post1 ) {// 判断当前是否分类页 if($wp_query->is_category == 1 && !has_category($wp_query->query_vars['cat'], $sticky_post1->ID)) {// 去除不属于本分类的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}if($wp_query->is_tag == 1 && has_tag($wp_query->query_vars['tag'], $sticky_post1->ID)) {// 去除不属于本标签的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}if($wp_query->is_year == 1 && date_i18n('Y', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {// 去除不属于本年份的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}if($wp_query->is_month == 1 && date_i18n('Ym', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {// 去除不属于本月份的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}if($wp_query->is_day == 1 && date_i18n('Ymd', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {// 去除不属于本日期的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}if($wp_query->is_author == 1 && $sticky_post1->post_author != $wp_query->query_vars['author']) {// 去除不属于本作者的文章 $offset1 = array_search($sticky_post1->ID, $sticky_posts); unset( $sticky_posts[$offset1] );}} $num_posts = count($posts); $sticky_offset = 0;// Loop over posts and relocate stickies to the front.for ( $i = 0; $i < $num_posts; $i++ ) {if ( in_array($posts[$i]->ID, $sticky_posts) ) { $sticky_post = $posts[$i];// Remove sticky from current position array_splice($posts, $i, 1);// Move to front, after other stickies array_splice($posts, $sticky_offset, 0, array($sticky_post));// Increment the sticky offset. The next sticky will be placed at this offset. $sticky_offset++;// Remove post from sticky posts array $offset = array_search($sticky_post->ID, $sticky_posts); unset( $sticky_posts[$offset] );}} // If any posts have been excluded specifically, Ignore those that are sticky.if ( !empty($sticky_posts) && !empty($wp_query->query_vars['post__not_in'] ) ) $sticky_posts = array_diff($sticky_posts, $wp_query->query_vars['post__not_in']); // Fetch sticky posts that weren't in the query resultsif ( !empty($sticky_posts) ) { $stickies = get_posts( array('post__in' => $sticky_posts,'post_type' => $wp_query->query_vars['post_type'],'post_status' => 'publish','nopaging' => true) ); foreach ( $stickies as $sticky_post ) { array_splice( $posts, $sticky_offset, 0, array( $sticky_post ) ); $sticky_offset++;}}}return $posts;}代码说明
1、如果你想让存档页也都显示全部置顶文章，那么就删掉11-43行的代码；
2、如果不想在某分类页显示置顶文章，将第 3 行的
if(
改成：
// abc是分类名称 if ( is_category( 'abc' ) ||
3、如果不想某标签页显示置顶文章，将第 3 行的
if(
改成：
// abc是标签名称 if ( is_tag( 'abc' ) ||
4、如果不想某作者页显示置顶文章，将第 3 行的
if(
改成：
// abc是作者昵称 if ( is_author( 'abc' ) ||
5、以上代码只对主循环有效，如果你在存档页使用WP_Query或query_posts来获取文章列表，又像让这些列表顶部显示置顶文章，可以把第3行代码中的以下代码删掉(注意：可能会导致文章显示数量跟你设置的不一样)：
|| !is_main_query()
置顶样式
如果你想给置顶文章添加样式，将以下代码添加到functions.php中，会给置顶文章添加一个名为 sticky 的class。具体的css代码，再自行自定义：
add_filter('post_class', 'addStickyClass' ,10,3 );function addStickyClass( $classes, $class, $post_id ){if( is_sticky() && is_category() && !isset( $classes['sticky'] ) ){ $classes[] = 'sticky';}return $classes;}
