Question about broken OOP stuff

Hello, I am using PHP at work and have run into several difficulties using the OO features of PHP. I ended up having to use a number of irritating workarounds that will make the code harder to maintain. Specifically: $obj[0]->get_next()->display(); Doesn't work Also variable interpolation doesn't seem to work right: # OK print $obj[0]->string . "<br>\n"; # OK printf("%s<br>\n", $obj[0]->string); # Broken printf("$obj[0]->string<br>\n"); Also: # Broken $obj[0]->iarray[0] = 13; $obj[0]->display(); Other than the problems w/ object referencing I find that PHP fits the bill for our project quite nicely, & I would like to continue to use it, but I don't think it will be possible to use it if OO stuff is broken. Do you have any idea when these might be addressed? Thanks, James