How to set multiple taxonomies to a post in WordPress using an array or terms.

brg_add_multiples_cats.php

//With term IDs
$categories = array('1','2','3','4','5');
$cats_to_add = array_map ('intval', $categorias); //ALWAYS CHECK IF IDs ARE INTEGERS!!
//With term names
//$cats_to_add = ('categoria 1', 'categoria 2', 'categoria 3', 'Categoria 4','categoria Cinco');
    if(wp_exist_post_by_title($string['title'])){
        echo 'post exists';
    } else {

            $my_post = array(
              'post_title'    => $string['title'],
              'post_content'  => $string['content'].'<br/><br/>'.$string['content2'],
              'post_status'   => 'draft',
              'post_author'   => 1,
              'post_category' =>  ''
            );
            $post_id = wp_insert_post($my_post);
      
			//with post_id we can set object terms
			wp_set_object_terms($post_id, $cats_to_add, 'category');
		}