Description:
------------
Hello,

pg_insert fails when PostgreSQL column type is inet. Standard pg_query runs without issue.

Test script:
---------------
PostgreSQL:
CREATE TABLE tmp_statistics
(
  id integer NOT NULL,
  remote_addr inet
);

PHP:
$data = Array("id" => 1, "remote_addr" => '127.0.0.1');
$dbconn = getDB(); // open connection 
$res = pg_insert($dbconn, 'tmp_statistics', $data);   
echo pg_last_error($dbconn);
// Notice: pg_insert(): Expects NULL or string for 'inet' (remote_addr) in ...
pg_query($dbconn, "insert into tmp_statistics (id, remote_addr) values (2, '127.0.0.1')"); // OK, record inserted

Expected result:
----------------
Two inserted records

Actual result:
--------------
Only second record is inserted