pg_dbname() returns the name of the database
that the given PostgreSQL connection
resource.
Parameters
connection
PostgreSQL database connection resource. When
connection is not present, the default connection
is used. The default connection is the last connection made by
pg_connect() or pg_pconnect().
Return Values
A string containing the name of the database the
connection is to, or FALSE on error.
Examples
Example 1. pg_dbname() example
<?php
error_reporting(E_ALL);
pg_connect("host=localhost port=5432 dbname=mary");
echo pg_dbname(); // mary
?>