记录下php集成环境中若干个工具的安装步骤和过程：
安装pear
wget http://pear.php.net/go-pear.phar
$ php go-pear.phar
使用:pear install <要安装的pear程序包>
安装phpunit
pear channel-discover pear.phpunit.de
pear channel-discover components.ez.no
pear channel-discover pear.symfony-project.com
sudo pear install phpunit/PHPUnit
安装phpmd
PHP mess detector：http://phpmd.org/，用来做基于pdepend的结果分析用工具：
<span style="font-size:14px;">pear channel-discover pear.phpmd.org
pear channel-discover pear.pdepend.org
pear install --alldeps phpmd/PHP_PMD</span>
安装phpcpd
（PHP copy paste detector:https://github.com/sebastianbergmann/phpcpd），用来发现项目中反复的代码工具:
<span style="font-size:14px;">pear channel-discover pear.phpunit.de
pear channel-discover components.ez.no
pear install phpunit/phpcpd</span>
安装phpdcd
（PHP dead code detector：https://github.com/sebastianbergmann/phpdcd）。用于发现项目中没有引用使用的代码:
pear channel-discover pear.phpunit.de
pear channel-discover components.ez.no
pear install phpunit/phpdcd-beta
使用：phpdcd --exclude /data/wwwroot/payapi/system/lib/ /data/wwwroot/payapi