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!
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