PHP: isset for buffer?
<p>Is there an method like isset so I can determine if there is a buffer to delete/flush?</p>

<blockquote>
  <p>Notice:  ob_end_flush(): failed to delete and flush buffer. No buffer
  to delete or flush.</p>
</blockquote>

<p>I'm not turning error reporting down from the highest sensitivity as doing so is highly insecure if you do enough thinking. So how can I iron out this issue please?</p>
