Note: This question is not only about the PEAR extension, it is in general.
I disabled the PEAR extension by installing PHP on CentOS server with the following command:
$ yum php --without-pear
Now I want to use the extension PEAR. Please answer the following question:
What is the command for installing a extension which was not installed during the PHP installation?
Note: I'm looking for a solution which does not involve PHP re-installation.