php pear 自動下載相依函示庫

phpunit/phpcpd requires package "channel://components.ez.no/ConsoleTools" (version >= 1.6)
phpunit/FinderFacade requires package "channel://pear.netpirates.net/fDOMDocument" (version >= 1.3.1
)phpunit/FinderFacade requires package "channel://pear.symfony.com/Finder" (version >= 2.1.0, version <= 2.1.99)

# pear config-set auto_discover 1

Reference :
php - PEAR package install fails - Stack Overflow