PECL is a repository for PHP extensions. To install PHP extensions from PCEL, you can use the command
pcel install EXTENSTION_NAME_HERE
To install a specific version, you can specify version after extension name as follows.
pecl install pecl_http-3.2.3
Once an extension is installed, you need to edit PHP configuration and add a line to load the PHP module.
extension=EXTENSTION_NAME_HERE.so
