#49991 [Bgs]: json_decode integer truncation on 32-bit machines
ID: 49991
User updated by: warren at guy dot net dot au
Reported By: warren at guy dot net dot au
Status: Bogus
Bug Type: JSON related
Operating System: FreeBSD 6.3
PHP Version: 5.2.11
New Comment:
Additionally, from a comment on
http://php.net/manual/en/function.json-decode.php:
> Nick Telford
> 25-Jun-2009 11:06
> In PHP <= 5.1.6 trying to decode an integer value that's >
PHP_INT_MAX
> will result in an intger of PHP_INT_MAX.
>
> In PHP 5.2+ decoding an integer > PHP_INT_MAX will cause a
conversion
> to a float.
which might implie that the expected behavior is not the behavior that
is being exhibited here.
Previous Comments:
------------------------------------------------------------------------
[2009-10-26 00:07:25] warren at guy dot net dot au
I am not asking json_decode to represent a number as an integer, nor
any specific type. It is detecting a numeric value and turning it in to
an integer for me. It seems that if it is able to detect that it is a
numeric value, perhaps it should also be aware that the numeric value is
greater than the max value of the type it is about to be assigned and
use a more appropriate type instead?
It seems counter intuitive that JSON numeric input on a 32 bit machine
should be limited to a 32 bit integer. If for some reason this
limitation is required, it should be obviously documented (it is not).
Side note: if I add '.0' to the end of a number, it becomes a float and
can represent numbers greater than 2147483647.
------------------------------------------------------------------------
[2009-10-25 22:55:03] shupp@php.net
FWIW, it works properly on my 32 bit linux machine (debian lenny):
$ php -v
PHP 5.2.6-1+lenny3 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 26 2009
22:16:23)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
------------------------------------------------------------------------
[2009-10-25 20:19:43] jani@php.net
How exactly would it work when max int size on 32bit is 2147483647 ?
Expected behaviour -> bogus.
------------------------------------------------------------------------
[2009-10-25 16:05:03] warren at guy dot net dot au
Nope, built on same machine it's running. 32 bit machine and OS.
FreeBSD [redacted] 6.3-RELEASE-p11 FreeBSD 6.3-RELEASE-p11 #0: Wed Jun
10 02:25:37 UTC 2009
root@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386
------------------------------------------------------------------------
[2009-10-25 16:00:18] mattwil@php.net
Are you cross-compiling for 32-bit, on a 64-bit system...?
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/49991
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Thread (7 messages)