ID: 43487
User updated by: jm at wo dot cz
Reported By: jm at wo dot cz
-Status: Feedback
+Status: Open
Bug Type: Strings related
Operating System: Linux
PHP Version: 5.2.5
New Comment:
The CVS snapshot makes no difference, still getting the same
incorrect strings.
[jm@st5mag ~]$ php -n -r '$f=array(1E-4, 1E-5, 1E-6, 1E-7, 1E-8);
foreach ($f as $fval) echo $fval, "\n";'
0.0001
1.0E-5
:.0E-7
:.0E-8
1.0E-8
[jm@st5mag ~]$ php -v
PHP 5.2.6-dev (cli) (built: Jan 28 2008 16:13:46)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
Previous poster suggested a CPU-related issue. I have encountered
this issue on the following CPUs:
vendor_id : AuthenticAMD
cpu family : 15
model : 5
model name : AMD Opteron(tm) Processor 248
stepping : 8
cpu MHz : 2205.074
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.80GHz
stepping : 6
cpu MHz : 1800.000
vendor_id : AuthenticAMD
cpu family : 15
model : 37
model name : AMD Opteron(tm) Processor 252
stepping : 1
cpu MHz : 2606.078
Previous Comments:
------------------------------------------------------------------------
[2008-01-28 07:59:48] oeriksson at mandriva dot com
I get the same problem, but it seems related to what CPU is used.
http://qa.mandriva.com/show_bug.cgi?id=37171
$ uname -a
Linux foo.nux.se 2.6.24-server-0.rc8.2mdv #1 SMP Wed Jan 23 17:15:33
UTC 2008
i686 Intel(R) Pentium(R) 4 CPU 2.80GHz GNU/Linux
$ php -r "var_dump(11.1/111);"
float(0.0:)
$ uname -a
Linux oe.nux.tld 2.6.24-desktop-0.rc8.2mdv #1 SMP Wed Jan 23 18:12:45
CET 2008
x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ GNU/Linux
$ php -r "var_dump(11.1/111);"
float(0.1)
It works with 5.1.6 though.
------------------------------------------------------------------------
[2008-01-26 01:12:23] jani@php.net
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows (zip):
http://snaps.php.net/win32/php5.2-win32-latest.zip
For Windows (installer):
http://snaps.php.net/win32/php5.2-win32-installer-latest.msi
------------------------------------------------------------------------
[2008-01-16 09:20:36] lmalgras at tennaxia dot com
I have the same problem with PHP 5.2.4 on Linux
Reproduce code:
---------------
php -n -r '$f=array(1E-4, 1E-5, 1E-6, 1E-7, 1E-8); foreach($f as $fval)
echo $fval, "\n";'
Expected result:
----------------
0.0001
1.0E-5
1.0E-6
1.0E-7
1.0E-8
Actual result:
--------------
0.0001
1.0E-5
:.0E-7
:.0E-8
1.0E-8
I have test this code on several configurations with the following
results :
PHP 5.2.0 (Linux) : Actual result
PHP 5.2.2 (Linux) : Actual result
PHP 5.2.3 (Windows): Actual result
------------------------------------------------------------------------
[2007-12-06 23:59:16] jm at wo dot cz
Obviously, I meant to say, the problem is with TWO numbers only:
1E-6 and 1E-7.
J.
------------------------------------------------------------------------
[2007-12-06 23:55:54] jm at wo dot cz
I got the same problem on another machine too, again PHP 5.2.5 with
pretty much the same configuration. In fact, the problem exhibits
also for version 5.2.4 on my machines.
About the unknown configuration options: Thanks, I had seen the
warning but did not have the time to edit my scripts and based on
the message it seemed harmless to leave the options be for now.
I am thinking that the problem and your inability to reproduce it
could be due to some libraries that PHP uses that may be buggy in
the versions on my systems. Can you please tell me what libraries,
if any, to look for? Although the installed version of software are
generally the latest stable releases, it is possible that a patch or
a downgrade may be in order on some library/tool.
Finally, the problem has so far appeared for 3 numbers only:
$ php -n -r '$f=array(1E-4, 1E-5, 1E-6, 1E-7, 1E-8); foreach ($f as
$fval) echo $fval, "\n";'
0.0001
1.0E-5
:.0E-7
:.0E-8
1.0E-8
Jan
------------------------------------------------------------------------
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/43487
--
Edit this bug report at http://bugs.php.net/?id=43487&edit=1