You can take a look at the discussion here: SSI File vs PHP Includes to get an idea about the differences between SSI File includes and PHP includes. These are not really Wappler specific options 
they’ve been around for many years.
You can take a look at the discussion here: SSI File vs PHP Includes to get an idea about the differences between SSI File includes and PHP includes. These are not really Wappler specific options they’ve been around for many years.