It's just that having my existing files already heavily modified, it's pretty hard to tell if (a) the changes highlighted by WinMerge are due to the mods or (b) if the changes highlighted are due to the 5.3 compatibility patches.
It's also pretty difficult to tell which mod has brought about the changes to the individual files and thereby determine if it's a PHP 5.3 compatible mod.
Example, in admin/orders.php I can see that date_diff needs to change to zen_date_diff.............. However, I have a mod with commands like, date_add(now(), INTERVAL " . TIME_ZONE_OFFSET . " HOUR), ................ and I'm wondering if that would need changed to, zen_date_add(now(), INTERVAL " . TIME_ZONE_OFFSET . " HOUR),
I think I'll get a quote from someone with more experience :lookaroun:unsure: