count_many_users_posts( int[] $users, string|string[] $post_type = ‘post’, bool $public_only = false )

由用户列表撰写的文章数。
Number of posts written by a list of users.

目录锚点：#参数#返回#源码#笔记

---

参数（Parameters）

返回（Return）

（string[]）每个用户以string形式按用户ID键入的文章数量。

源码（Source）

/**
 * Number of posts written by a list of users.
 *
 * @since 3.0.0
 *
 * @global wpdb $wpdb
 *
 * @param array        $users       Array of user IDs.
 * @param string|array $post_type   Optional. Single post type or array of post types to check. Defaults to 'post'.
 * @param bool         $public_only Optional. Only return counts for public posts.  Defaults to false.
 * @return array Amount of posts each user has written.
 */
function count_many_users_posts( $users, $post_type = 'post', $public_only = false ) {
	global $wpdb;

	$count = array();
	if ( empty( $users ) || ! is_array( $users ) )
		return $count;

	$userlist = implode( ',', array_map( 'absint', $users ) );
	$where = get_posts_by_author_sql( $post_type, true, null, $public_only );

	$result = $wpdb->get_results( "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author", ARRAY_N );
	foreach ( $result as $row ) {
		$count[ $row[0] ] = $row[1];
	}

	foreach ( $users as $id ) {
		if ( ! isset( $count[ $id ] ) )
			$count[ $id ] = 0;
	}

	return $count;
}

//
// User option functions
//

笔记（Notes）

返回用户id列表的post计数。