WordPress修改改文章状态：wp_publish_post()
【描述】
通过更改文章状态来发表文章。
【使用方法】
【参数】
$post_id
（整数）（必需）文章编号
默认值：None
返回的值
（空）
【示例】
注释
用法：$wpdb
用法：通过do_action() 调用一下函数 $post_id和$post（文章相关数据）：
edit_post()
save_post()
wp_insert_post()
【修改记录】
自2.1.0版本后
【源文件】
wp_publish_post()位于wp-includes/post.php中。
/**
* Publish a post by transitioning the post status.
*
* @since 2.1.0
* @uses $wpdb
* @uses do_action() Calls 'edit_post', 'save_post', and 'wp_insert_post' on post_id and post data.
*
* @param int $post_id Post ID.
* @return null
*/
function wp_publish_post($post_id) {
global $wpdb;
$post = get_post($post_id);
if ( empty($post) )
return;
if ( 'publish' == $post->post_status )
return;
$wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post_id ) );
$old_status = $post->post_status;
$post->post_status = 'publish';
wp_transition_post_status('publish', $old_status, $post);
// Update counts for the post's terms.
foreach ( (array) get_object_taxonomies('post') as $taxonomy ) {
$tt_ids = wp_get_object_terms($post_id, $taxonomy, array('fields' => 'tt_ids'));
wp_update_term_count($tt_ids, $taxonomy);
}
do_action('edit_post', $post_id, $post);
do_action('save_post', $post_id, $post);
do_action('wp_insert_post', $post_id, $post);
}
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