title: How can I come back to previous php page when I call another php?
body: <p>I have 2 PHP pages. In the first page, I am clicking a button which redirects to another file via <code>&lt;a&gt;</code> tag and does its work(sending mail). but now I want once that page functionality is done it should come to the previous page without any user action. How can I do that?</p>
  
  <p>include once is not the solution since it just calls other php. I need to come back to the same page, however.</p>