Пакет php8.1-pgsql: Информация

The php8.1-pgsql package includes a dynamic shared object (DSO) that adds
PostgreSQL database support to PHP.  PostgreSQL is an object-relational
database management system that supports almost all SQL constructs. PHP is
an HTML-embedded scripting language. If you need back-end support for
PostgreSQL, you should install this package in addition to the main php
package.