Description:
------------
Select interval value is right shifted 

"12:34:56"  - value in DB : INTERVAL HOUR TO SECOND

pdo_informix return as

" 12:34:5"


Datetime work OK

Reproduce code:
---------------
echo "<PRE>";

$db = new PDO("informix: database=dbxy; server=ds0_vyvoj");
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$db->exec("CREATE TEMP TABLE ttt ( col1  interval hour to second ) ");
$db->exec("INSERT INTO ttt VALUES ('01:23:45' ) ");

$stm = $db->query("SELECT * FROM ttt");
foreach ( $stm as $row )
     var_dump( $row );


Expected result:
----------------
array(2) {
  ["COL1"]=>
  string(8) "12:34:56"
  [0]=>
  string(8) "12:34:56"
}

Actual result:
--------------
array(2) {
  ["COL1"]=>
  string(8) " 12:34:5"
  [0]=>
  string(8) " 12:34:5"
}