Functions that allow the modification of built-in data types.

modify-data-types.inc.php

<?php

/**
 * Plugin Name:     EggMUP: Modify Built-in Data Types
 * Plugin URI:      https://gist.github.com/ianpegg/
 * Description:     Functions that allow the modification of built-in data types.
 * Version:         1.0.0
 * Author:          Ian Pegg
 * Author URI:      https://eggcupwebdesign.com
 * php version 7.4.15
 *
 * @category Must_Use_Plugin
 * @package  WordPress_Plugin
 * @author   Ian Pegg <hello@eggcupweb.com>
 * @license  GNU/GPLv3 https://www.gnu.org/licenses/gpl-3.0.txt
 * @link     https://eggcupwebdesign.com
 */

namespace EggCup\MUP\ModifyBuiltInDataTypes;

if (!defined('ABSPATH')) {
    exit;
}

/**
 * This script registers following functions with WP action hooks/filters:
 */
add_action('init', __NAMESPACE__ . '\\Modify_Builtin_taxonomies', 10);

/**
 * Passes an array of modified configuration arguments
 * to register_taxonomy, which will use these values to 
 * overwrite the default configuration.
 *
 * @todo Add an argument to the function that accepts the
 * configuration array, before validating and passing on to
 * register_taxonomy.
 *
 * @return void
 */
function Modify_Builtin_taxonomies() {
    $Arr_args = [
        'publicly_queryable' => false,
    ];
    
    register_taxonomy(
        'category',
        '',
        $Arr_args
    );
}