pi
pi
(PHP 4, PHP 5, PHP 7)
pi — Get value of pi
Description
float pi ( void )
Returns an approximation of pi. The returned float has a precision based on the precision directive in php.ini, which defaults to 14. Also, you can use the M_PI constant which yields identical results to pi().
Return Values
The value of pi as float.
Examples
Example #1 pi() example
<?php
echo pi( // 3.1415926535898
echo M_PI; // 3.1415926535898
?>
← octdec
pow →
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
