因为需要安装phpunit,要先装pear，网上的教程大多数是以双击go-pear.bat开始，但是我安装的php文件夹里压根没有这个文件。
经过几次搜索之后终于找到了办法。
解决步骤如下:
1.下载下面连接的文件go-pear.phar。放到PHP的安装文件下（D:\www\php54)
http://pear.php.net/go-pear.phar 2.执行php go-pear.phar
（Windows上执行的时候因为有UAC的问题所以需要以管理员权限运行CMD。XP下以管理员权限运行CMD的方法：在C:/systerm32文件夹下，右键cmd，运行方式》选择管理员运行）
打开cmd，
C:\Documents and Settings\sun>d:
C:\Documents and Settings\sun>cd D:\www\php54 //以此方式进入到 go-pear.phar存放路径
D:\www\php54>php go-pear.phar //安装go-pear.phar
Are you installing a system-wide PEAR or a local copy?
(system|local) [system] : local //此处输入local
Please confirm local copy by typing 'yes' : yes //此处输入yes，之后一路回车键
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 ($prefix) : D:\www\php54
2. Temporary directory for processing : D:\www\php54\tmp
3. Temporary directory for downloads : D:\www\php54\tmp
4. Binaries directory : D:\www\php54
5. PHP code directory ($php_dir) : D:\www\php54\pear
6. Documentation directory : D:\www\php54\docs
7. Data directory : D:\www\php54\data
8. User-modifiable configuration files directory : D:\www\php54\cfg
9. Public Web Files directory : D:\www\php54\www
10. Tests directory : D:\www\php54\tests
11. Name of configuration file : D:\www\php54\pear.ini
12. Path to CLI php.exe : D:\www\php54
1-12, 'all' or Enter to continue:
Beginning install...
Configuration written to D:\www\php54\pear.ini...
Initialized registry...
Preparing to install...
installing phar://D:/www/php54/go-pear.phar/PEAR/go-pear-tarballs/Archive_Tar-1.
3.11.tar...
installing phar://D:/www/php54/go-pear.phar/PEAR/go-pear-tarballs/Console_Getopt
-1.3.1.tar...
installing phar://D:/www/php54/go-pear.phar/PEAR/go-pear-tarballs/PEAR-1.9.4.tar
...
installing phar://D:/www/php54/go-pear.phar/PEAR/go-pear-tarballs/Structures_Gra
ph-1.0.4.tar...
installing phar://D:/www/php54/go-pear.phar/PEAR/go-pear-tarballs/XML_Util-1.2.1
.tar...
install ok: channel://pear.php.net/Archive_Tar-1.3.11
install ok: channel://pear.php.net/Console_Getopt-1.3.1
install ok: channel://pear.php.net/Structures_Graph-1.0.4
install ok: channel://pear.php.net/XML_Util-1.2.1
install ok: channel://pear.php.net/PEAR-1.9.4
PEAR: Optional feature webinstaller available (PEAR's web-based installer)
PEAR: Optional feature gtkinstaller available (PEAR's PHP-GTK-based installer)
PEAR: Optional feature gtk2installer available (PEAR's PHP-GTK2-based installer)
PEAR: To install optional features use "pear install pear/PEAR#featurename"
******************************************************************************
WARNING! The include_path defined in the currently used php.ini does not
contain the PEAR PHP directory you just specified:
<D:\www\php54\pear>
If the specified directory is also not in the include_path used by
your scripts, you will have problems getting any PEAR packages working.
Would you like to alter php.ini <D:\www\php54\php.ini>? [Y/n] : y
php.ini <D:\www\php54\php.ini> include_path updated.
Current include path : .;C:\php\pear
Configured directory : D:\www\php54\pear
Currently used php.ini (guess) : D:\www\php54\php.ini
Press Enter to continue:
** WARNING! Old version found at D:\www\php54, please remove it or be sure to us
e the new d:\www\php54\pear.bat command
The 'pear' command is now at your service at d:\www\php54\pear.bat
** The 'pear' command is not currently in your PATH, so you need to
** use 'd:\www\php54\pear.bat' until you have added
** 'D:\www\php54' to your PATH environment variable.
Run it without parameters to see the available actions, try 'pear list'
to see what packages are installed, or 'pear help' for help.
For more information about PEAR, see:
http://pear.php.net/faq.php
http://pear.php.net/manual/
Thanks for using go-pear!
D:\www\php54>pear list
INSTALLED PACKAGES, CHANNEL PEAR.PHP.NET:
=========================================
PACKAGE VERSION STATE
Archive_Tar 1.3.11 stable
Console_Getopt 1.3.1 stable
PEAR 1.9.4 stable
Structures_Graph 1.0.4 stable
XML_Util 1.2.1 stable
D:\www\php54>pear install DB //安装DB库