problem with PHP 4.3.10 and mySQL 5

[olafmol]

Hello,

on our new server we're running mySQL 5 instead of mySQL 3.23 on our old
server. We're using PHP 4.3.10 with MMTurk cache and Zend optimisation
enabled and using the same php.ini on both servers. The strange thing is
that on our old server it seems that mysql connections stay automatically
persistent, when including a file which sets up an mysql connection, and
then does mysql_close() the file that includes this file can still use the
same connection. But now on the new server this isn't possible anymore. We
have to comment out the mysql_close() command to get things working again.
The only 2 issues i can think of are that it has to do something with IIS6
vs IIS4 which we're using on our old server, or on some differences between
mySQL5 and mySQL3. Any info?

cheers, Olaf