For questions about PEAR, a repository of PHP software code, designed to offer some functionality not built into PHP core. Questions about PHP programming are off topic and should be asked on stackoverflow.com.
The PHP Extension and Application Repository, or PEAR, is a repository of PHP software code. Its use as a package manager (for both PEAR and PECL) has been deprecated (it throws numerous warnings if you run it under PHP 5.4 or later). PEAR libraries, being normal PHP files, can be downloaded directly and included like any other PHP file. If you need a package manager for PEAR, you can use PEAR2_Pyrus, which is written in phar (the PHP Archive format).