<?php

add_action( 'save_post_' . cptsatwcp_post_type_name(), 'cptsatwcp_update_post_terms', 10, 3 );

/**
 * @param integer $post_ID
 * @param WP_Post $post
 * @param bool    $update
 */
function cptsatwcp_update_post_terms( $post_ID, $post, $update ) {
	if ( $post->post_type !== cptsatwcp_post_type_name() ) {
		return;
	}
	if ( ! $update ) {
		$args  = array(
			'taxonomy'   => cptsatwcp_taxonomy(),
			'hide_empty' => false,
			'fields'     => 'ids',
		);
		$terms = get_terms( $args );
		wp_set_post_terms( $post_ID, $terms, cptsatwcp_taxonomy() );
	}
}

function cptsatwcp_post_type_name() {
	return 'kreditnaya-karta';
}

function cptsatwcp_taxonomy() {
	return 'cities';
}