pg_fetch_result() returns values
from a result resource
returned by pg_query().
row is integer.
field is field name (string) or field index
(integer). The row and field specify what cell in the
table of results to return. Row numbering starts from 0.
Instead of naming the field, you may use the field index as
an unquoted number. Field indices start from 0.
PostgreSQL has many built in types and only the basic
ones are directly supported here. All forms of integer
types are returned as
integer values. All forms of float,
and real types are returned as float
values. Boolean is returned as "t" or "f". All other types,
including arrays are returned as strings formatted in the
same default PostgreSQL manner that you would see in the psql program.