'pgsql' => array(
        'driver'   => 'pgsql',
        'host'     => 'localhost',
        'database' => 'dbname',
        'username' => 'username',
        'password' => 'password',
        'charset'  => 'utf8',
        'prefix'   => '',
    ),

$dbconn = pg_connect("host=localhost port=5432 dbname=dbname user=username password=password");

SQLSTATE[08006] [7] FATAL: no pg_hba.conf entry for host "::1", user "myusername", database "my_database", SSL OFF