db2_fetch_assoc of various ibmi db2 sql type.php

<?php
$sql="SELECT 
CAST(1 as smallint) as smallint,
CAST(2 as INTEGER) as INTEGER,
CAST(3 as BIGINT) as BIGINT,
CAST(4. as real) as real,
CAST(5.1 as FLOAT) as FLOAT,
CAST(6.1 as DOUBLE) as DOUBLE,
CAST(7.1 as DECIMAL) as DECIMAL,
CAST(8.1 as NUMERIC) as NUMERIC,
CAST('9.1' as CHAR(4)) as CHAR,
CAST('10.1' as VARCHAR(4)) as VARCHAR,
CAST('10.1' as CLOB) as CLOB,
CAST(x'7FFF' as BINARY) as BINARY
FROM SYSIBM.SYSDUMMY1";
$stmt = db2_exec($db2Connection,$sql);
$row = db2_fetch_assoc($stmt) ;
var_dump($row);

array(12) {
  ["SMALLINT"]=>
  int(1)
  ["INTEGER"]=>
  int(2)
  ["BIGINT"]=>
  string(1) "3"
  ["REAL"]=>
  float(4)
  ["FLOAT"]=>
  float(5.1)
  ["DOUBLE"]=>
  float(6.1)
  ["DECIMAL"]=>
  string(1) "7"
  ["NUMERIC"]=>
  string(1) "8"
  ["CHAR"]=>
  string(4) "9.1 "
  ["VARCHAR"]=>
  string(4) "10.1"
  ["CLOB"]=>
  string(4) "10.1"
  ["BINARY"]=>
  string(1) ""
}