Bug #62240 [Com]: 5.4.3 regression, converting from float to int gives incorrect output

From: Date: Wed, 06 Jun 2012 08:53:43 +0000
Subject: Bug #62240 [Com]: 5.4.3 regression, converting from float to int gives incorrect output
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=62240&edit=1

 ID:                 62240
 Comment by:         zuallauz at gmail dot com
 Reported by:        zuallauz at gmail dot com
 Summary:            5.4.3 regression, converting from float to int gives
                     incorrect output
 Status:             Open
 Type:               Bug
 Package:            *General Issues
 Operating System:   Ubuntu 12.04
 PHP Version:        5.4.3
 Block user comment: N
 Private report:     N

 New Comment:

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.


Previous Comments:
------------------------------------------------------------------------
[2012-06-06 08:41:31] rasmus@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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