On Wed, Dec 31, 2008 at 11:15, LKSunny <ad@xxxxxxxx> wrote:> i need accuracy, how to ?
No you don't. Not the level of accuracy Per was mentioning. Hissuggestion to round() is what you need. Just adjust the [optional]second parameter to the number of decimal places you wish to round:
<?php$credithold = 100;for($i=1;$i<=1000;$i++){ $credithold -= 0.1; echo round($credithold,1)."<br />\n";}?>
> "Per Jessen" <per@xxxxxxxxxxxx> 撰寫於郵件新聞:gjg4fk$58p$1@xxxxxxxxxxxxxxxxxxx> LKSunny wrote:>>> <?>> $credithold = 100;>> for($i=1;$i<=1000;$i++){>> $credithold -= 0.1;>> echo "$credithold<br />";>> }>> //i don't know why, when run this code, on 91.3 after expect is 91.2,>> however......91.200000000001>> //who can help me ? and tell me why ?>> It's a floating point rounding error. If you don't need the accuracy,> just round it to what you need.>>> /Per Jessen, Zurich>>>> --> PHP General Mailing List (http://www.php.net/)> To unsubscribe, visit: http://www.php.net/unsub.php>>
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