The famous shoe library is in php. If the suffix of the web page file is asp, it is asp source code. If it is php, it is PHP source code. If it is aspx, it is the source code of ASP.NET. The famous shoe library uses static page settings, so it can't be seen from the URL link file html. It depends on whether the core source code of the page contains php links to judge whether to adopt php system. Shopex is a php system.