Script that set all Woocommerce's "Product Visibility" to "Hidden"

product_visibility_hidden.php

<?php

$args = array(
    "post_type" => "product",
    "posts_per_page" => -1,
);

$post_query = new WP_Query($args);

if ( $post_query->have_posts() ) {
    while ( $post_query->have_posts() ) { $post_query->the_post();
        wp_set_post_terms(
            get_the_ID(), 
            array(
                "exclude-from-catalog",
                "exclude-from-search"
            ),
            "product_visibility"
        );
        echo "<h2>" . get_the_title() . "</h2><br><pre>";
        print_r(get_terms("product_visibility")) . "</pre>";
    }
}