新手向-PHP5.2.17上Zend Optimizer安装失败

PHP5.2.17
ZendOptimizer-3.3.3

安装ZendOptimizer-3.3.3中的Readme，将ZendOptimizer-3.3.3丢到了C:\Program Files目录下
php.ini中添加如下配置
[Zend]
zend_extension_manager.optimizer_ts="C:\Program Files\ZendOptimizer-3.3.3"
zend_extension_ts="C:\Program Files\ZendOptimizer-3.3.3\ZendExtensionManager.dll"

但是在phpinfo()中看到的只有

This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies
with Zend Extension Manager v1.2.0, Copyright (c) 2003-2007, by Zend Technologies

没有with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies这个提示