I stand corrected on 14.04, it seems that as per the link in my previous post, only imageantialias is still missing, the rest have been backported!
$ php -r "var_dump(function_exists('imagerotate'));" bool(true)
I stand corrected on 14.04, it seems that as per the link in my previous post, only imageantialias is still missing, the rest have been backported!
$ php -r "var_dump( function_ exists( 'imagerotate' ));"
bool(true)