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Posted by "Wong HoWang" on 10/20/28 11:26
Dear Jordan,
I know what you mean. But you may try this one and you will know:
<?php
ini_set('precision',200);
echo pi();
?>
the result is the same as 16!!!
So that's why I ask this question! I am not stupid like that!
Please help, thx!
"Jordan Miller" <jmil@hymiegladstone.com>
wrote:534D8D52-751D-45B6-9B49-DD9FA136C727@hymiegladstone.com...
> http://us3.php.net/manual/en/ini.core.php#ini.precision
>
> precision sets the number of significant digits, *NOT* the number of
> digits displayed after the decimal point.
>
> If you want to get pi out to 16 decimal places you need a precision of
> *17* because the beginning 3 is a significant digit.
>
> Your code does exactly this, displaying pi with 15 decimal places.
>
> Jordan
>
>
>
> On Sep 1, 2005, at 8:06 AM, Wong HoWang wrote:
>
>> Dear all,
>>
>> I'm trying to do like this but failed:
>>
>> <?php
>> ini_set('precision',16);
>> echo pi();
>> ?>
>>
>> How can I get more digits after . ?
>>
>> Can anyone help? Thx!
>>
>> --
>> PHP General Mailing List (http://www.php.net/)
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>>
>>
>>
>>
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