The 2.6 upgrade magically created the parents statement below.
{parents channel="question" orderby="question_order|entry_date"}
It throws the PHP error that you see below.
Message: Parameter 1 to array_multisort() expected to be a reference, value given
Filename: relationship_parser/Parser.php
Line Number: 583
The statement on that line does not make sense to me as it calls the array_multisort using call_user_func_array rather than directly calling it. I commented out the line and replaced it with the direct call as indicated below and it seems to work.
//call_user_func_array(‘array_multisort’, $sort_parameters);
array_multisort($sort_parameters);
I am running PHP v5.3.3.
Is this the correct fix for this problem?