WordPress分类与标签等存档页实现置顶的方法

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) && !emptyempty($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 ( !emptyempty($sticky_posts) && !emptyempty($wp_query->query_vars['post__not_in'] ) ) 
$sticky_posts = array_diff($sticky_posts, $wp_query->query_vars['post__not_in']); 
// Fetch sticky posts that weren't in the query results 
if ( !emptyempty($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