function gen_bcnav generates a html preset button div with a string of current location sequence, also known as "Breadcrumb Navigation".
bool href expects a boolean value (true/false). If true, every breadcrumb will be an url, if existing.
string splitter expects a value such as "/", etc.; It represents the character that's used to split every single breadcrumb. If empty, using default "|";
This function uses caching! Every change needs the cache to be cleared.
<?php gen_bcnav(true,">"); gen_bcnav(false,""); gen_bcnav(false,"/"); ?>