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Request #69161 Removing Signed Zeros - number_format
Submitted: 2015-03-02 16:01 UTC Modified: 2017-09-10 14:55 UTC
Votes:2
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: tom at r dot je Assigned: cmb (profile)
Status: Closed Package: *General Issues
PHP Version: All OS: Linux
Private report: No CVE-ID: None
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 [2015-03-02 16:01 UTC] tom at r dot je 
Description:
------------
It's possible to get a signed zero:

<?php
echo round(-0.0001, 2); // -0
?>

This is valid according to IEEE 754 so probably shouldn't be changed internally. However, for display purposes, "-0" is needlessly confusing.

There's no simple way of removing it. I can call abs($num) but I need an if statement to only call abs($num); when $num is -0. 

My proposal is that number_format, which is used for display purposes, changes -0 into +0.

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AllCommentsChangesGit/SVN commitsRelated reports
 [2015-03-11 09:03 UTC] demon@php.net
-PHP Version: 5.6.6 +PHP Version: All
 [2015-03-11 09:30 UTC] demon@php.net
-Assigned To: +Assigned To: demon
 [2015-03-11 13:06 UTC] demon@php.net
-Status: Assigned +Status: Open -Assigned To: demon +Assigned To:
 [2017-09-10 14:55 UTC] cmb@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: cmb
 [2017-09-10 14:55 UTC] cmb@php.net 
> My proposal is that number_format, which is used for display
> purposes, changes -0 into +0.

A respective RFC has been accepted and implemented (available as
of PHP 7.2.0):
<https://wiki.php.net/rfc/number_format_negative_zero>.
 
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