(PHP 5, PECL OCI8 >= 1.1.0)
OCI-Collection::getElem — Returns value of the element
   Returns element's value with the index index (0-based).
  
indexThe element index. First index is 0.
   Returns FALSE if such element doesn't exist; NULL if element is NULL;
   string if element is column of a string datatype or number if element is
   numeric field.