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Bug #21801 number_format do not round correctly
Submitted: 2003-01-21 12:38 UTC Modified: 2005-09-22 21:42 UTC
From: supad at noos dot fr Assigned:
Status: Closed Package: Math related
PHP Version: 4.2.2 OS: Linux
Private report: No CVE-ID: None
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From: supad at noos dot fr
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 [2003-01-21 12:38 UTC] supad at noos dot fr 
<?
echo number_format(0.49)."<br>";
echo number_format(0.50)."<br>";
echo number_format(0.51)."<br><br>";

echo round(0.49)."<br>";
echo round(0.50)."<br>";
echo round(0.51)."<br>";
?>

returns

0
0
1

0
1
1

number_format do not round correctly while round does.

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 [2003-01-21 14:10 UTC] iliaa@php.net 
In 4.3 both round() and number_format() round 0.5 to 1. Keep in mind that this may also depend on your libc, which is what doing the rounding.
 
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