Array_intersect with php4 and ORACLE?

[admin]

I can磘 get array_intersect to work with Oracle 8.1.7!!!
Use Linux 7.0 with Apache and PHP4.04.
When i use Array_intersect with MySQL it works like a charm! But with oracle-db (OCI) array_intersect doesn磘 want to intersect the arrays. The first param in the function is the one that is copied. ex->

$temp= Array_intersect(array_1, array_2);
$temp= $array_1

OR

$temp= Array_intersect(array_2, array_1);
$temp= $array_2

Weird->
Is there a difference between oracle-row and MySQL-row?

Please help
sincerely Rafko