Profile fields display as 'Array' in online contribution email receipts

The changes made to support unlimited profiles for event registration forms in 3.4.5/4.0.5 broke email receipts for online contributions when the contribution form contains a bottom-of-page profile. The top-of-page profile displays fine in the receipt, but the bottom-of-page profile shows raw field names (eg, first_name, phone-3-1, cutom_5, etc) and the word 'Array' for the corresponding values.

The problem is in the return value from CRM_Core_BAO_UFJoin::getUFGroupIds(). The array returned contains an int for the first Group ID and an array for the second Group ID. I changed the second Group ID from an array to an int, and the problem is solved for contribution receipts. I have not verified if there are any consequences to the change to support unlimited profiles in event registration forms.

Here is the original source:

while ( $dao->fetch( ) ) {
if ($dao->weight == 1)

{ $first = $dao->uf_group_id; $firstActive = $dao->is_active; }

else

{ $second[] = $dao->uf_group_id; $secondActive[] = $dao->is_active; }

}
return array( $first, $second, $firstActive, $secondActive );

The change I made was to remove the array brackets from $second[] and $secondActive[].