> On 4 Nov 2014, at 17:07, Jakub Zelenka <bu...@php.net> wrote:
> 
> I would really like to see it as default in the next major as it is a
> useful feature.
> 
> However I don't like adding new flag. The reason for that is that it
> becomes useless after 7 is realesed. It would be useful only for >5.6.3 and
> <7.0 though. The only use case in PHP 7 would be just to disable the flag
> but that won't be very nice and completely different than other json
> constant usage It means doing something like $options &
> ~JSON_PRESERVE_FRACTIONAL_PART ... It's a bit messy IMHO. Think that it
> would be much better to wait till 7 with this feature.

I really don’t like the idea of making this the default. On 32-bit systems, 
floats give you, effectively, extra integer range up until you hit 2^52, and 
indeed all JS integer values are just floats within that range. I don’t think 
they should be represented as floats. It’d go weirdly with 64-bit PHP, which 
can decode such values to integers, which would then not handle the range 
beyond 2^52 nicely.

Also, it wouldn’t go well for cross-version compatibility with my bigint RFC 
here.

--
Andrea Faulds
http://ajf.me/





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