pg_pconnect() opens a connection
to a PostgreSQL database. It returns a connection resource
that is needed by other PostgreSQL functions.
For a description of the
connection_string parameter, see
pg_connect().
To enable persistent connection, the
pgsql.allow_persistent php.ini
directive must be set to "On" (which is the default). The
maximum number of persistent connection can be defined with
the
pgsql.max_persistent php.ini
directive (defaults to -1 for no limit). The total number of
connections can be set with the pgsql.max_links php.ini directive.
pg_close() will not close persistent links generated
by pg_pconnect().
See also pg_connect(), and the section Persistent Database
Connections for more information.