SHORTINIT WP with plugins and theme support

<?php

define('SHORTINIT', true);
require 'wp-load.php';

// Require the minimum to verify the current user -----------------------------------------------
require_once ABSPATH . WPINC . '/default-constants.php';
require_once ABSPATH . WPINC . '/class-wp-user.php';
require_once ABSPATH . WPINC . '/user.php';
require_once ABSPATH . WPINC . '/pluggable.php';
require_once ABSPATH . WPINC . '/capabilities.php';
require_once ABSPATH . WPINC . '/class-wp-roles.php';
require_once ABSPATH . WPINC . '/class-wp-role.php';
require_once ABSPATH . WPINC . '/l10n.php';
require_once ABSPATH . WPINC . '/class-wp-session-tokens.php';
require_once ABSPATH . WPINC . '/class-wp-user-meta-session-tokens.php';
require_once ABSPATH . WPINC . '/rest-api.php';
require_once ABSPATH . WPINC . '/kses.php';
remove_action( 'init', '_wp_footnotes_kses_init' );
remove_action( 'set_current_user', '_wp_footnotes_kses_init' );

/**
 * Used to guarantee unique hash cookies.
 *
 * @since 1.5.0
 */
if ( ! defined( 'COOKIEHASH' ) ) {
    $siteurl = get_site_option( 'siteurl' );
    if ( $siteurl ) {
        define( 'COOKIEHASH', md5( $siteurl ) );
    } else {
        define( 'COOKIEHASH', '' );
    }
}

/**
 * @since 2.0.0
 */
if ( ! defined( 'USER_COOKIE' ) ) {
    define( 'USER_COOKIE', 'wordpressuser_' . COOKIEHASH );
}

/**
 * @since 2.0.0
 */
if ( ! defined( 'PASS_COOKIE' ) ) {
    define( 'PASS_COOKIE', 'wordpresspass_' . COOKIEHASH );
}

/**
 * @since 2.5.0
 */
if ( ! defined( 'AUTH_COOKIE' ) ) {
    define( 'AUTH_COOKIE', 'wordpress_' . COOKIEHASH );
}

/**
 * @since 2.6.0
 */
if ( ! defined( 'SECURE_AUTH_COOKIE' ) ) {
    define( 'SECURE_AUTH_COOKIE', 'wordpress_sec_' . COOKIEHASH );
}

/**
 * @since 2.6.0
 */
if ( ! defined( 'LOGGED_IN_COOKIE' ) ) {
    define( 'LOGGED_IN_COOKIE', 'wordpress_logged_in_' . COOKIEHASH );
}

$user_id = wp_validate_auth_cookie( '', 'logged_in' );
// END OF require minimum to verify the current user. -----------------------------------------------

// Here you could get the current user if you don't need anything else.
// echo json_encode( wp_get_current_user()->data->user_nicename );
// exit;

// Do minimum required to load plugins and themes (Note that shortcodes, blocks, and widgets won't work correctly) --------------------------------------------------
global $shortcode_tags;
$shortcode_tags = [];

function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
	return $text;
}

// Mock some things we don't need.
function add_shortcode() {};
function wp_initialize_theme_preview_hooks() {};
class WP_Widget {}

require ABSPATH . WPINC . '/class-wp-embed.php';
$GLOBALS['wp_embed'] = new WP_Embed();

require ABSPATH . WPINC . '/class-wp-textdomain-registry.php';
$GLOBALS['wp_textdomain_registry'] = new WP_Textdomain_Registry();
$GLOBALS['wp_textdomain_registry']->init();

require ABSPATH . WPINC . '/theme.php';
require ABSPATH . WPINC . '/embed.php';
require ABSPATH . WPINC . '/media.php';
require ABSPATH . WPINC . '/link-template.php';
require ABSPATH . WPINC . '/class-wp-post-type.php';
require ABSPATH . WPINC . '/post.php';
require ABSPATH . WPINC . '/taxonomy.php';
require ABSPATH . WPINC . '/class-wp-taxonomy.php';
require ABSPATH . WPINC . '/class-wp-term.php';

wp_plugin_directory_constants();

$GLOBALS['wp_plugin_paths'] = array();

// Load must-use plugins.
foreach ( wp_get_mu_plugins() as $mu_plugin ) {
	$_wp_plugin_file = $mu_plugin;
	include_once $mu_plugin;
	$mu_plugin = $_wp_plugin_file; // Avoid stomping of the $mu_plugin variable in a plugin.

	/**
	 * Fires once a single must-use plugin has loaded.
	 *
	 * @since 5.1.0
	 *
	 * @param string $mu_plugin Full path to the plugin's main file.
	 */
	do_action( 'mu_plugin_loaded', $mu_plugin );
}
unset( $mu_plugin, $_wp_plugin_file );

// Load network activated plugins.
if ( is_multisite() ) {
	foreach ( wp_get_active_network_plugins() as $network_plugin ) {
		wp_register_plugin_realpath( $network_plugin );

		$_wp_plugin_file = $network_plugin;
		include_once $network_plugin;
		$network_plugin = $_wp_plugin_file; // Avoid stomping of the $network_plugin variable in a plugin.

		/**
		 * Fires once a single network-activated plugin has loaded.
		 *
		 * @since 5.1.0
		 *
		 * @param string $network_plugin Full path to the plugin's main file.
		 */
		do_action( 'network_plugin_loaded', $network_plugin );
	}
	unset( $network_plugin, $_wp_plugin_file );
}

/**
 * Fires once all must-use and network-activated plugins have loaded.
 *
 * @since 2.8.0
 */
do_action( 'muplugins_loaded' );

if ( is_multisite() ) {
	ms_cookie_constants();
}

// Define constants after multisite is loaded.
wp_cookie_constants();

// Define and enforce our SSL constants.
wp_ssl_constants();

// Create common globals.
require ABSPATH . WPINC . '/vars.php';

// Make taxonomies and posts available to plugins and themes.
// @plugin authors: warning: these get registered again on the init hook.
create_initial_taxonomies();
create_initial_post_types();

wp_start_scraping_edited_file_errors();

// Register the default theme directory root.
// register_theme_directory( get_theme_root() );

// if ( ! is_multisite() && wp_is_fatal_error_handler_enabled() ) {
// 	// Handle users requesting a recovery mode link and initiating recovery mode.
// 	wp_recovery_mode()->initialize();
// }

// Load active plugins.
foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
	wp_register_plugin_realpath( $plugin );

	$_wp_plugin_file = $plugin;
	include_once $plugin;
	$plugin = $_wp_plugin_file; // Avoid stomping of the $plugin variable in a plugin.

	/**
	 * Fires once a single activated plugin has loaded.
	 *
	 * @since 5.1.0
	 *
	 * @param string $plugin Full path to the plugin's main file.
	 */
	do_action( 'plugin_loaded', $plugin );
}
unset( $plugin, $_wp_plugin_file );

/**
 * Fires once all must-use and network-activated plugins have loaded.
 *
 * @since 2.8.0
 */
do_action( 'muplugins_loaded' );
do_action( 'plugins_loaded' );

// Load pluggable functions.
require ABSPATH . WPINC . '/pluggable.php';
// END OF doing the minimum required to load plugins and themes (and most of their dependencies, except widgets, blocks, and shortcodes).

// Call any function from your custom plugin here.
// my_custom_plugin_function();
// exit;

// Or do a custom query:
// global $wpdb;
// $post_id = 1805;
// $result = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );
// echo json_encode( $result );
// exit;

// Or get the current user:
// print_r( wp_get_current_user() );
// die();