title: how to get returned text from a php page
body: <p>very simple php question,</p>
  
  <p>for example, demo.php just returns a text like this "hello".</p>
  
  <p>how can i get this text from an another php page ?</p>
  
  <p>UPDATE:</p>
  
  <p>actually i meant page is outputting it like this  "print 'hello';"</p>