&reftitle.required; To use PostgreSQL support, you need libpq (the PostgreSQL C client library). As of PHP 8.0.0, libpq 9.1 or later is required. As of PHP 8.4.0, libpq 10.0 or later is required. PostgreSQL supports many character encodings including multibyte character encoding. The current version and more information about PostgreSQL is available at &url.pgsql; and the PostgreSQL Documentation.

&reftitle.resources; Prior to PHP 8.1.0, there were two resource types used in the PostgreSQL module. The first one is the link identifier for a database connection, the second a resource which holds the result of a query.