WordPressで現在の投稿クエリに準拠したから全ての投稿IDを取得する方法

function get_all_posts_ids() {
	global $wp_query;
	$args                   = $wp_query->query_vars;
	$args['posts_per_page'] = -1;
	$args['fields']         = 'ids';
	$args['nopaging']       = true;
	$the_query              = new WP_Query( $args );
	$post_ids               = $the_query->posts;
	wp_reset_postdata();
}
add_action( 'wp_head', 'get_all_posts_ids', 10 );

	$args                   = $wp_query->query_vars;

	$args['posts_per_page'] = -1;
	$args['fields']         = 'ids';

	$args['nopaging']       = true;