描述
wordpress 刪除一篇文章，附件，或者頁面。
當在文章或頁面使用這個函數的時候，所有依賴這個文章或頁面的內容也將被刪除。包括評論，自定義字段，和文章與類別的關系
使用方法
- <?php?wp_delete_post(?$postid,?$force_delete?);??>
參數
$postid
(整形)(可選) 文章 ID.
默認: 0
$force_delete
(布爾型) (可選) 是否繞過回收站箱直接刪除 (在 WordPress 2.9 添加).
默認: false
返回值
混合型(mixed)
False on failure and a random wpdb object on success.
例子
刪除文章
刪除默認文章 “Hello World” 文章 ID 是 ‘1’.
- <?php?wp_delete_post(1);??>
源文件
wp_delete_post() 位于 wp-includes/post.php.
- function?wp_delete_post(?$postid?=?0,?$force_delete?=?false?)?{
- ?global?$wpdb,?$wp_rewrite;
- ?if?(?!$post?=?$wpdb->get_row($wpdb->prepare("SELECT?*?FROM?$wpdb->posts?WHERE?ID?=?%d",?$postid))?)
- ??return?$post;
- ?if?(?!$force_delete?&&?(?$post->post_type?==?'post'?||?$post->post_type?==?'page')?&&?get_post_status(?$postid?)?!=?'trash'?&&?EMPTY_TRASH_DAYS?)
- ???return?wp_trash_post($postid);
- ?if?(?$post->post_type?==?'attachment'?)
- ??return?wp_delete_attachment(?$postid,?$force_delete?);
- ?do_action('before_delete_post',?$postid);
- ?delete_post_meta($postid,'_wp_trash_meta_status');
- ?delete_post_meta($postid,'_wp_trash_meta_time');
- ?wp_delete_object_term_relationships($postid,?get_object_taxonomies($post->post_type));
- ?$parent_data?=?array(?'post_parent'?=>?$post->post_parent?);
- ?$parent_where?=?array(?'post_parent'?=>?$postid?);
- ?if?(?'page'?==?$post->post_type)?{
- ???
- ??
- ??if?(?get_option('page_on_front')?==?$postid?)?{
- ???update_option('show_on_front',?'posts');
- ???delete_option('page_on_front');
- ??}
- ??if?(?get_option('page_for_posts')?==?$postid?)?{
- ???delete_option('page_for_posts');
- ??}
- ??
- ??$children_query?=?$wpdb->prepare("SELECT?*?FROM?$wpdb->posts?WHERE?post_parent?=?%d?AND?post_type='page'",?$postid);
- ??$children?=?$wpdb->get_results($children_query);
- ??$wpdb->update(?$wpdb->posts,?$parent_data,?$parent_where?+?array(?'post_type'?=>?'page'?)?);
- ?}?else?{
- ??unstick_post($postid);
- ?}
- ?
- ?$revision_ids?=?$wpdb->get_col(?$wpdb->prepare(?"SELECT?ID?FROM?$wpdb->posts?WHERE?post_parent?=?%d?AND?post_type?=?'revision'",?$postid?)?);
- ?
- ?foreach?(?$revision_ids?as?$revision_id?)
- ??wp_delete_post_revision(?$revision_id?);
- ?
- ?$wpdb->update(?$wpdb->posts,?$parent_data,?$parent_where?+?array(?'post_type'?=>?'attachment'?)?);
- ?$comment_ids?=?$wpdb->get_col(?$wpdb->prepare(?"SELECT?comment_ID?FROM?$wpdb->comments?WHERE?comment_post_ID?=?%d",?$postid?));
- ?if?(?!?emptyempty($comment_ids)?)?{
- ??do_action(?'delete_comment',?$comment_ids?);
- ??foreach?(?$comment_ids?as?$comment_id?)
- ???wp_delete_comment(?$comment_id,?true?);
- ??do_action(?'deleted_comment',?$comment_ids?);
- ?}
- ?$post_meta_ids?=?$wpdb->get_col(?$wpdb->prepare(?"SELECT?meta_id?FROM?$wpdb->postmeta?WHERE?post_id?=?%d?",?$postid?));
- ?if?(?!emptyempty($post_meta_ids)?)?{
- ??do_action(?'delete_postmeta',?$post_meta_ids?);
- ??$in_post_meta_ids?=?"'"?.?implode("',?'",?$post_meta_ids)?.?"'";
- ??$wpdb->query(?"DELETE?FROM?$wpdb->postmeta?WHERE?meta_id?IN($in_post_meta_ids)"?);
- ??do_action(?'deleted_postmeta',?$post_meta_ids?);
- ?}
- ?do_action(?'delete_post',?$postid?);
- ?$wpdb->query(?$wpdb->prepare(?"DELETE?FROM?$wpdb->posts?WHERE?ID?=?%d",?$postid?));
- ?do_action(?'deleted_post',?$postid?);
- ?if?(?'page'?==?$post->post_type?)?{
- ??clean_page_cache($postid);
- ??foreach?(?(array)?$children?as?$child?)
- ???clean_page_cache($child->ID);
- ??$wp_rewrite->flush_rules(false);
- ?}?else?{
- ??clean_post_cache($postid);
- ?}
- ?wp_clear_scheduled_hook('publish_future_post',?array(?$postid?)?);
- ?do_action('after_delete_post',?$postid);
- ?return?$post;
- }
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