title: How do I cache and clear the output buffer in Perl?
body: <p>I have the following PHP code which opens the output buffer, includes a file, stores it in a variable, and clears the buffer:</p>
  
  <pre><code>ob_start(); 
  include('test.html');
  $input=ob_get_clean(); 
  </code></pre>
  
  <p>How would the equivalent look in Perl?</p>