// Return an array of row objects with keys from column 1
// (Duplicates are discarded)
foreach ( $this->last_result as $row ) {
- $key = array_shift( get_object_vars( $row ) );
+ $key = array_shift( $var_by_ref = get_object_vars( $row ) );
if ( ! isset( $new_array[ $key ] ) )
$new_array[ $key ] = $row;
}