PEAR is a PHP Extension and Application Repository. For details see PHP Pear.
The pear package manager has to have access to internet for installing and updating packages.
To access internet over a proxy with authentication, make the following configuration setting:
pear config-set http_proxy http://<username>:<password>@<proxy address>:<proxy port>
pear config-set http_proxy http://wolfgran:firstname.lastname@example.org:8084
Update all packages:
Install a new package / application
pear install <package name>
For more options enter