Do you mean like this?
These two pages use the same php to make the page headers.
To use include for that, you could have these three files:
File 1 - Products page:
//rest of the products page
File 2 - Create/Delete Classes page:
//rest of the Create/Delete Classes page
File 3 - Header portion of both pages:
//everything for header goes here.
[Updated on: Fri, 21 April 2017 01:20]
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