loop_no_results хук-событие . WP 4.9.0

Fires if no results are found in a post query.

Использование

add_action( 'loop_no_results', 'action_function_name_5937' );
function action_function_name_5937( $this ){
	// action...
}

$this(WP_Query)

The WP_Query instance.

Где используется хук

Код хука

...
			 * @since 2.0.0
			 *
			 * @param WP_Query $this The WP_Query instance (passed by reference).
			 */
			do_action_ref_array( 'loop_end', array( &$this ) );
			// Do some cleaning up after the loop
			$this->rewind_posts();
		} elseif ( 0 === $this->post_count ) {
			/**
			 * Fires if no results are found in a post query.
			 *
			 * @since 4.9.0
			 *
			 * @param WP_Query $this The WP_Query instance.
			 */
			do_action( 'loop_no_results', $this );
		}

		$this->in_the_loop = false;
		return false;
	}

	/**
	 * Rewind the posts and reset post index.
	 *
	 * @since 1.5.0
	 */
	public function rewind_posts() {
		$this->current_post = -1;
		if ( $this->post_count > 0 ) {
			$this->post = $this->posts[0];
...