Path/URL constants for use in WordPress/ClassicPress plugins to speed IDE autocompletion.

constants.php

<?php

// Declare the namespace.
namespace MYPLUGINNAME;

// Prevent direct access.
if (!defined('ABSPATH')) {
	die();
}

// Gain access to the get_home_path() function.
require_once(ABSPATH.'wp-admin/includes/file.php');

// Ex: /home/user/mysite
define(__NAMESPACE__.'\PATH_HOME', untrailingslashit(get_home_path()));

// Ex: https://mysite.com
define(__NAMESPACE__.'\URL_HOME', untrailingslashit(home_url()));

// Ex: /home/user/mysite/wp-admin
const PATH_ADMIN = PATH_HOME.'/wp-admin';

// Ex: /home/user/mysite/wp-content/plugins
const PATH_PLUGINS = WP_PLUGIN_DIR;

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name
const PATH_SELF = PATH_PLUGINS.'/'.PLUGIN_SLUG;

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/extensions
const PATH_EXTENSIONS = PATH_SELF.'/extensions';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/scripts
const PATH_SCRIPTS = PATH_SELF.'/scripts';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/styles
const PATH_STYLES = PATH_SELF.'/styles';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/images
const PATH_IMAGES = PATH_SELF.'/images';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/languages
const PATH_LANGUAGES = PATH_SELF.'/languages';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/includes
const PATH_INCLUDES = PATH_SELF.'/includes';

// Ex: /home/user/mysite/wp-content/plugins/my-plugin-name/classes
const PATH_CLASSES = PATH_SELF.'/classes';

// Ex: https://mysite.com/wp-admin
const URL_ADMIN = URL_HOME.'/wp-admin';

// Ex: https://mysite.com/wp-content/plugins
const URL_PLUGINS = WP_PLUGIN_URL;

// Ex: https://mysite.com/wp-content/plugins/my-plugin-name
const URL_SELF = URL_PLUGINS.'/'.PLUGIN_SLUG;

// Ex: https://mysite.com/wp-content/plugins/my-plugin-name/extensions
const URL_EXTENSIONS = URL_SELF.'/extensions';

// Ex: https://mysite.com/wp-content/plugins/my-plugin-name/scripts
const URL_SCRIPTS = URL_SELF.'/scripts';

// Ex: https://mysite.com/wp-content/plugins/my-plugin-name/styles
const URL_STYLES = URL_SELF.'/styles';

// Ex: https://mysite.com/wp-content/plugins/my-plugin-name/images
const URL_IMAGES = URL_SELF.'/images';