title: Read echo'ed output from another PHP file
body: <p>I want 1 PHP file to "run" (include?) another PHP file on the same server, and access its echo'ed output as a string.</p>
  
  <p>How do i do this in PHP? Any inbuilt functions to do this?</p>
  
  <p>Or any better way of executing another PHP file and getting its output?</p>