ID: 43053
Comment by: lhfagundes at gmail dot com
Reported By: owner at dragon-hearts dot net
Status: Verified
Bug Type: Scripting Engine problem
Operating System: Centos4
PHP Version: 5CVS-2007-10-25
New Comment:
This gets bad if the float is casted to string (which happens if it
goes through requests):
$x = 1200000000.00;
echo $x . "\n";
echo (int)$x . "\n";
$x = "$x";
echo (int) $x . "\n";
In PHP 4.4.2 (I guess in earlier php5 too)
1200000000
1200000000
1200000000
now:
1.2E+9
1200000000
1
Previous Comments:
------------------------------------------------------------------------
[2008-01-28 13:39:47] gcleaves at yahoo dot com dot au
Same problem:
PHP Version 5.2.4
Windows NT HGCT-SQL 5.2 build 3790
Apache 2.0 Handler
------------------------------------------------------------------------
[2008-01-26 02:18:38] [EMAIL PROTECTED]
This issue is still present in PHP 5.2.5 (FreeBSD). It only happens on
some floats.
If there is a reason for using E-notation in this case - which could be
argued, although I feel changing past behavior is not necessary,
especially as MySQL has trouble handling these values in common
scenarios - it should be made consistent so people can depend on it and
prevent problems by testing.
<?php
echo phpversion() . "\n";
echo 2700000.0;
echo "\n";
echo 2800000.0;
echo "\n";
echo 2900000.0;
echo "\n";
?>
devwh:~> php floats.php
5.2.1
2700000
2800000
2900000
test:~> php floats.php
5.2.4
2700000
2.8E+6
2900000
toms1:~> php floats.php
5.2.5
2700000
2.8E+6
2900000
------------------------------------------------------------------------
[2008-01-18 21:42:38] nate at recoverydatabase dot net
We just got bit by this on one of our servers running Fedora 7 and PHP
5.2.4 installed via yum. The others not causing any headaches are
running Fedora 6 and PHP 5.1.6.
It's not just a display problem - we have a mysql database with very
large values in the primary keys, and when this server tries to insert
data, or display, or lookup information based on those values it fails
miserably.
A php.ini option to disable the notation behavior would be nice. As
for right now I must get back to downgrading. :(
------------------------------------------------------------------------
[2007-12-29 01:50:56] daniel at fanetworks dot net
I also noticed results coming as scientific notation for larger numbers
in 5.1.6.
Honestly, it should always come out in interger format with an option
to return as notation.
Having data not return in a reliable format is a serious issue.
Its like $array = array(1=>2, 3=>4); sometimes returning with a
serialized version of the array as a string instead of an actual array.
Its hard to code when data is returning in an uncontrolled format :(
------------------------------------------------------------------------
[2007-12-01 08:07:06] owner at dragon-hearts dot net
I could see it being desireable to have floats come out in normal or
scientific format so maybe a php.ini setting would be in order for this.
------------------------------------------------------------------------
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/43053
--
Edit this bug report at http://bugs.php.net/?id=43053&edit=1
