错误求助！ob_end_flush(): failed to delete and flush buffer.

joker_buggy

报错:
[error] PHP Notice:  ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush in /var/www/html/shindig/src/common/HttpServlet.php on line 81, referer: http://*********

代码:
public function __destruct() {
    if (! $this->noHeaders) {
      header("Content-Type: $this->contentType" . (! empty($this->charset) ? "; charset={$this->charset}" : ''));
      header('Accept-Ranges: bytes');
      if ($this->noCache) {
        header("Cache-Control: no-cache, must-revalidate", true);
        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT", true);
      } else {
        
        header('Cache-Control: public,max-age=' . $this->cacheTime, true);
        header("Expires: " . gmdate("D, d M Y H:i:s", time() + $this->cacheTime) . " GMT", true);
      
        if (! isset($_SERVER['HTTP_PRAGMA']) || ! strstr(strtolower($_SERVER['HTTP_PRAGMA']), 'no-cache') && (! isset($_SERVE
R['HTTP_CACHE_CONTROL']) || ! strstr(strtolower($_SERVER['HTTP_CACHE_CONTROL']), 'no-cache'))) {
          if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $this->lastModified && ! isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
            $if_modified_since = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
            if ($this->lastModified <= $if_modified_since) {
              header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $this->lastModified) . ' GMT', true);
              header("HTTP/1.1 304 Not Modified", true);
              header('Content-Length: 0', true);
              ob_end_clean();
              die();
            }
          }
          header('Last-Modified: ' . gmdate('D, d M Y H:i:s', ($this->lastModified ? $this->lastModified : time())) . ' GMT',
true);
        }
      }
    }
    else {
      ob_end_flush(); 《=============================================出错位置的代码，请问这该怎么修改？
    }
  }

请问该如何修改，本人没搞过php，特来求助

joker_buggy

回复 2# xinglu1983


    OK了，查了很多地方
    修改成了
while (ob_get_level() > 0) {
            ob_end_flush();
        }

    报错就没了

xinglu1983

没有ob_start

maochanglu

ob_start 还可以嵌套着玩啊。