PHP_Compat

Hi devs, I'd like some guidance with PHP_Compat. I have a bunch of functions people have requested I add, these are: * ob_clean * ob_flush * ob_get_clean * ob_get_flush * array_search * array_key_exists * constant * call_user_func_array And, replica superglobals. There are a couple of problems. The ob_ functions don't exactly replicate the behaviour (not possible), and the other functions are very old (4.0.4+). Should they still be added? With the superglobals - should they be added as an "environment" component? Would this open the door to all sorts of things, like magic_quotes off, etc? Is this a bad thing? So, what I ask: Should the ob functions get added? Should the very old functions get included? Thus, should the minimum replication version be lowered to say 4.0.0? Should a new class of components be added - environment compatibility? Thanks