ifx_fieldtypes

$types = ifx_fieldtypes ($resultid);
if (! isset ($types)) {
  ... エラー処理 ...
}
for ($i = 0; $i < count($types); $i++) {
    $fname = key($types);
    printf("%s :\t type =  %s\n", $fname, $types[$fname]);
    next($types);
}