Here is a little "PHP include" and "WordPress path" guide on how to include a PHP file in your WordPress theme - using a relative path.

This WordPress WooCommerce fix removes the product-category slug from the WordPress WooCommerce URL.

Heres a little WordPress snippet that allows you to exclude current WordPress post from the WP Query - i.e. list of recent posts, more posts from the same category, ...

This snippet allows you to show the current local time in the local language the WordPress installation has been configured to use.