#47304 [Opn->Fbk]: typecast of numeric string to float produces strange result

From: Date: Wed, 04 Feb 2009 22:21:37 +0000
Subject: #47304 [Opn->Fbk]: typecast of numeric string to float produces strange result
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-133512@lists.php.net to get a copy of this message 
 ID:               47304
 Updated by:       jani@php.net
 Reported By:      lennartvdd at mailordersolutions dot nl
-Status:           Open
+Status:           Feedback
 Bug Type:         Variables related
 Operating System: Server 2003 for SBS SP2 - IIS
 PHP Version:      5.2.8
 New Comment:

Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/




Previous Comments:
------------------------------------------------------------------------

[2009-02-04 12:41:54] lennartvdd at mailordersolutions dot nl

Description:
------------
Typecasting or converting some numeric strings variables to a float
value does not work as expected.

Reproduce code:
---------------
$var = (float)"-39.000";
var_dump($var);
$var = (float)"39.000";
var_dump($var);
$var = (float)"17.000";
var_dump($var);
$var = (float)"-17.000";
var_dump($var);
$var = "-39.000" + 0;
var_dump($var);
$var = "39.000" + 0;
var_dump($var);
$var = "17.000" + 0;
var_dump($var);
$var = "-17.000" + 0;
var_dump($var);

Expected result:
----------------
float(-39)
float(39)
float(17)
float(-17)
float(-39)
float(39)
float(17)
float(-17)

Actual result:
--------------
float(-38.:)
float(38.:)
float(16.:)
float(-16.:)
float(-38.:)
float(38.:)
float(16.:)
float(-16.:)


------------------------------------------------------------------------


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