php是template lauguage

The premise behind a template language is that the language is "embedded" within some other master document. Specifically, on your average document, the total size of the document is mostly document source than template language.

Some template languages are full blown general purpose languages, such as PHP, ASP.NET, and Java's JSP. Others are more limited designed specifically for templating, such as Velocity and FreeMarker (both utilities for Java).

Many word processors, such as Microsoft Word, have their own templating capabilities, commonly referred to as "Mail Merge".