1、Windows的开始 -> 运行 ->cmd
2、安装命令
进入php所在目录，执行命令：go-pear.bat
Are you installing a system-wide PEAR or a local copy?
(system|local) [system] : 敲击回车键 (Enter)
Below is a suggested file layout for your new PEAR installation. To
change individual locations, type the number in front of the
directory. Type ‘all’ to change all of them or simply press Enter to
accept these locations.
1. Installation base ($prefix) : D:\APMServ5.2.6\PHP
2. Temporary directory for processing : D:\APMServ5.2.6\PHP\tmp
3. Temporary directory for downloads : D:\APMServ5.2.6\PHP\tmp
4. Binaries directory : D:\APMServ5.2.6\PHP
5. PHP code directory ($php_dir) : D:\APMServ5.2.6\PHP\pear
6. Documentation directory : D:\APMServ5.2.6\PHP\docs
7. Data directory : D:\APMServ5.2.6\PHP\data
8. User-modifiable configuration files directory : D:\APMServ5.2.6\PHP\cfg
9. Public Web Files directory : D:\APMServ5.2.6\PHP\www
10. Tests directory : D:\APMServ5.2.6\PHP\tests
11. Name of configuration file : D:\APMServ5.2.6\PHP\pear.ini
12. Path to CLI php.exe : D:\APMServ5.2.6\PHP\.
1-12, ‘all’ or Enter to continue: 输入all
接下来一直回车，最后
PHP 目录会多出一个文件 PEAR_ENV.reg ，双击导入注册表。
输入pear version，显示：
PEAR Version: 1.9.4
PHP Version: 5.3.5
Zend Engine Version: 2.3.0
Running on: Windows NT CND0135 5.1 build 2600 (Windows XP Professional Service Pack 3) i586
表示pear已安装成功。
安装PHPUnit之前，要把pear的路径添加到php.ini中
include_path=".;E:\wamp\bin\php\php5.3.5\PEAR"
接着要添加Channel
pear channel-discover pear.phpunit.de
pear channel-discover components.ez.no
pear channel-discover pear.symfony-project.com
然后，pear upgrade-all命令对pear进行升级，因为phpunit的安装对pear的版本有要求。
最后，pear install phpunit/PHPUnit安装phpunit。
安装失败要重新安装时，先执行pear clear-cache命令再安装。