PHP Manual: pg

function pg_options(?PgSql\Connection $connection = null): string

pg_options() will return a string containing the options specified on the given PostgreSQL connection instance.

connection

An PgSql\Connection instance. When connection is null, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

Warning

As of PHP 8.1.0, using the default connection is deprecated.

A string containing the connection options.

Version	Description
8.1.0	The `connection` parameter expects an PgSql\Connection instance now; previously, a resource was expected.
8.0.0	`connection` is now nullable.

Example #1 pg_options() example

<?php
   $pgsql_conn = pg_connect("dbname=mark host=localhost");
   echo pg_options($pgsql_conn);
?>

pg_options