Determining Plugin and Content Directories in WordPress (Cheat Sheet)

wp-paths.php

<?php
echo "<h1>Determining Plugin and Content Directories in WordPress (Cheat Sheet)</h1>";

# PLUGINS
echo "<h2>PLUGINS</h2>";
echo plugins_url(). "<br>";                                     # http://wordpress.test/wp-content/plugins
echo plugins_url('akismet'). "<br>";                            # http://wordpress.test/wp-content/plugins/akismet
echo plugins_url( 'assets/js/myscript.js', __FILE__ ). "<br>";  # http://wordpress.test/wp-content/plugins/assets/js/myscript.js
echo plugin_dir_url('') . "<br>";                               # http://wordpress.test/wp-content/plugins/

# THEMES
echo "<h2>THEMES</h2>";
echo get_template_directory_uri() . "<br>";                     # http://wordpress.test/wp-content/themes/twentytwentyone
echo get_stylesheet_directory_uri() . "<br>";                   # http://wordpress.test/wp-content/themes/twentytwentyone
echo get_stylesheet_uri() . "<br>";                             # http://wordpress.test/wp-content/themes/twentytwentyone/style.css
echo get_theme_root_uri() . "<br>";                             # http://wordpress.test/wp-content/themes
echo get_theme_root() . "<br>";                                 # C:\laragon\www\wordpress/wp-content/themes
echo get_theme_roots() . "<br>";                                # /themes
echo get_stylesheet_directory() . "<br>";                       # C:\laragon\www\wordpress/wp-content/themes/twentytwentyone
echo get_template_directory() . "<br>";                         # C:\laragon\www\wordpress/wp-content/themes/twentytwentyone

# SITE HOME
echo "<h2>SITE HOME</h2>";
echo home_url(). "<br>";                                        # http://wordpress.test
echo home_url('products'). "<br>";                              # http://wordpress.test/products

# WORDPRESS
echo "<h2>WORDPRESS</h2>";
echo admin_url() . "<br>";                                      # http://wordpress.test/wp-admin/
echo site_url() . "<br>";                                       # http://wordpress.test
echo content_url() . "<br>";                                    # http://wordpress.test/wp-content
echo includes_url() . "<br>";                                   # http://wordpress.test/wp-includes/
echo wp_upload_dir()['path'] . "<br>";                          # C:\laragon\www\wordpress/wp-content/uploads/2021/04
echo wp_upload_dir()['url'] . "<br>";                           # http://wordpress.test/wp-content/uploads/2021/04
echo wp_upload_dir()['subdir'] . "<br>";                        # /2021/04
echo wp_upload_dir()['basedir'] . "<br>";                       # C:\laragon\www\wordpress/wp-content/uploads
echo wp_upload_dir()['baseurl'] . "<br>";                       # http://wordpress.test/wp-content/uploads

# MULTISITE
echo "<h2>MULTISITE</h2>";
echo get_admin_url() . "<br>";                                  # http://wordpress.test/wp-admin/
echo get_home_url() . "<br>";                                   # http://wordpress.test
echo get_site_url() . "<br>";                                   # http://wordpress.test
echo network_admin_url() . "<br>";                              # http://wordpress.test/wp-admin/
echo network_site_url() . "<br>";                               # http://wordpress.test
echo network_home_url() . "<br>";                               # http://wordpress.test
echo network_admin_url('network') . "<br>";                     # http://wordpress.test/wp-admin/network
echo network_site_url('network') . "<br>";                      # http://wordpress.test/network
echo network_home_url('network') . "<br>";                      # http://wordpress.test/network

# CONSTANTS
echo "<h2>CONSTANTS</h2>";
echo home_url(). "<br>";                                        # http://wordpress.test
echo home_url('products'). "<br>";                              # http://wordpress.test/products

# CONSTANTS
echo "<h2>CONSTANTS</h2>";
echo ABSPATH . "<br>";                                          # C:\laragon\www\wordpress/
echo WP_CONTENT_DIR . "<br>";                                   # C:\laragon\www\wordpress/wp-content
echo WP_CONTENT_URL . "<br>";                                   # http://wordpress.test/wp-content
echo WP_PLUGIN_DIR . "<br>";                                    # C:\laragon\www\wordpress/wp-content/plugins
echo WP_PLUGIN_URL . "<br>";                                    # http://wordpress.test/wp-content/plugins
?>