PEAR modules are collections of functions that allow you to perform tasks using PEAR finctions. There are many of the most popular installed as part of the server.
While installed, they are not enabled globally for many reasons. You might need to install/enable a PEAR module before you can use it with an application that make calls to this function.
You can do this in your cPanel account under "Software/Services" and PHP-PEAR Modules.
It is most likely best to use the search and enter all or part of the PEAR package name and search. Additional details are then provided for each package available.
If you find that your particular module is not present, create a support ticket in you client area and we will do all that we can within limitations to provide/install a package you might need.
