How to pass same index array value from multiple arrays?

Hi

I posted my question on the forum, but seems nobody pay attention that much.
http://dba.stackexchange.com/questions/111410/call-ordered-element-from-foreach-on-multiple-arrays

In PLPGSQL. Can FOREACH loop over the multiple array?. <br>
In my case 3 arrays dimention are identical.<br>
How can I pass the elements of them like

for(int i = 0 ; i < array1.length ; i++){
my_method(array1[i], array2[i], array3[i]);
}

Here is my attempt.

NOTICE: The transaction is in an uncommitable state.Transaction was rolled back.
NOTICE: query "SELECT QuestionList, UserResponseID_List, UserResponseList" returned 3 columns 42601
ERROR: cannot begin/end transactions in PL/pgSQL
HINT: Use a BEGIN block with an EXCEPTION clause instead.
CONTEXT: PL/pgSQL function dugong.session_hugeinsert(integer,text,text) line 38 at SQL statement

How can I pass values like ordinary procedural language line C/C++, Java, etc.
Best regards
Sarit