Edit report at https://bugs.php.net/bug.php?id=62240&edit=1
ID: 62240
Updated by: cataphr...@php.net
Reported by: zuallauz at gmail dot com
Summary: 5.4.3 regression, converting from float to int gives
incorrect output
-Status: Open
+Status: Not a bug
Type: Bug
Package: *General Issues
Operating System: Ubuntu 12.04
PHP Version: 5.4.3
Block user comment: N
Private report: N
New Comment:
The only change in log() between these two versions is the handling of the case
where base == 1, as you can see with:
git diff php-5.3.3 php-5.4.3 -- ext/standard/math.c
log() is taken from math.h, so I guess the explanation here is that you were
using a different libm.
Previous Comments:
------------------------------------------------------------------------
[2012-06-06 08:53:43] zuallauz at gmail dot com
Ok, so is 5.4.4 likely to be released this month? I will have to put a manual
hack in my app until it is released I think.
------------------------------------------------------------------------
[2012-06-06 08:41:31] ras...@php.net
I am not able to reproduce this in PHP 5.4.4
------------------------------------------------------------------------
[2012-06-06 08:28:54] zuallauz at gmail dot com
Description:
------------
Ok this code correctly works on 5.3.3 but I have since upgraded to 5.4.3 and it
now incorrectly casts the float to an integer.
It occurs when converting the output from the log() function to an integer. It
should be a simple float to int conversion. However in the current stable PHP
it outputs the wrong integer for no apparent reason.
I have compiled PHP 5.4.3 release with the following if that helps:
./configure --with-zlib --with-gd --with-jpeg-dir --with-png-dir
--enable-gd-native-ttf --with-freetype-dir --enable-bcmath --enable-sockets
--with-openssl --with-pdo-mysql=mysqlnd
--with-mysql-sock=/var/run/mysqld/mysqld.sock --enable-mbstring
--enable-mbregex --with-curl --with-apxs2=/usr/local/apache2/bin/apxs
--with-config-file-path=/usr/local/apache2/conf
I consider this a critical bug so please fix ASAP.
Test script:
---------------
$logarithm = log(8, 2);
var_dump($logarithm);
$int = (int) $logarithm;
var_dump($int);
Expected result:
----------------
Expected output as it is in PHP 5.3.3:
float(3)
int(3)
Actual result:
--------------
Actual output in PHP 5.4.3:
float(3)
int(2)
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=62240&edit=1
