Installing PEAR Packages in PHP

You want to install a PEAR package.

Download and install the package from the PEAR Channel server using Pryus:

You can also install from another PEAR Channel:

You can also install from any location on the Internet:

Here’s how to install if you have a local copy of a package:

To install PEAR packages, you need write permission where the packages are stored; this defaults to /usr/local/lib/php/.
You can also request multiple packages at the same time:

When installing a package, Pyrus checks that you have all the necessary PHP functions and PEAR packages that the new package depends on.

If this check fails, it installs all required PEAR dependencies:

Once a PEAR package is installed, use it in your PHP scripts by calling require_once.
For example, here’s how to include the HTTP_Request2 package:

Generally, if a package name contains an underscore, replace it with a slash, and add .php to the end.
Because PEAR packages are included as regular PHP files, make sure the directory containing the PEAR packages is in your include_path.

If it isn’t, include_once and require_once can’t find PEAR class files.