怎样我后台用不了，提示没有zend

怎样我后台用不了，提示没有zend
我打开后台就
有这些提示：
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Zend Optimizer not installed

This file was encoded by the Zend Guard. In order to run it, please install the Zend Optimizer (available without charge), version 3.0.0 or later.

Seeing this message instead of the website you expected?This means that this webserver is not configured correctly. In order to view this website properly, please contact the website's system administrator/webmaster with the following message:

The component "Zend Optimizer" is not installed on the Web Server and therefore cannot service encoded files. Please download and install the Zend Optimizer (available without charge) on the Web Server.

Note: Zend Technologies cannot resolve issues related to this message appearing on websites not belonging to Zend Technologies.What is the Zend Optimizer?

The Zend Optimizer is one of the most popular PHP plugins for performance-improvement, and has been available without charge, since the early days of PHP 4. It improves performance by scanning PHP's intermediate code and passing it through multiple Optimization Passes to replace inefficient code patterns with more efficient code blocks. The replaced code blocks perform exactly the same operations as the original code, only faster.

In addition to improving performance, the Zend Optimizer also enables PHP to transparently load files encoded by the Zend Guard.

The Zend Optimizer is a free product available for download from Zend Technologies. Zend Technologies also developed the PHP scripting engine, known as the Zend Engine.

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我按网上的方法 检测服务器是否安装了Zend Optimizer

首先写一个 phpinfo 文件，代码如下：

• <PRE><?php
• phpinfo();
• ?> </PRE>
  

复制代码
保存代码为 PHP 文件，如 phpinfo.php，然后将该文件放到网站根目录下。

输入http://di3shequ.com/phpinfo.php，可以看到如下图所示：



谁能帮帮我 谢谢