$ which pear
/opt/local/bin/pear
$ sudo pear install PHP_CodeSniffer
$ sudo pear channel-discover pear.cakephp.org
$ sudo pear install cakephp/CakePHP_CodeSniffer
$which phpcs
/opt/local/bin/phpcs
でさっきのページでphpstormの設定
http://blog.jandorsman.com/blog/using-cakephp-code-sniffer-with-phpstorm