Apparently this function does not return the database name given in the connection string. I tried this on apache 2.x/php4.3.x/pg7.4.x and apache 1.3.x/php5.x/pg8rc1 and saw this behavior on both setups.
(PHP 4, PHP 5, PHP 7, PHP 8)
pg_options — Estrae le opzioni associate alla connessione
Apparently this function does not return the database name given in the connection string. I tried this on apache 2.x/php4.3.x/pg7.4.x and apache 1.3.x/php5.x/pg8rc1 and saw this behavior on both setups.