PHP command for loading html page

[redundguy]

How can I load a html page with PHP?

[AdamGundry]

I presume you mean simply insert the contents of the file into your PHP-generated page, in which case you can do one of these:

include("filename.html");
require("filename.html");

If there is an error, include gives a warning whereas require stops the script from executing (a fatal error).

Adam