pi
(PHP 3, PHP 4, PHP 5)
pi -- Get value of pi
Beskrivelse
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().
Returneringsværdier
The value of pi as float.
Eksempler
Eksempel 1. pi() example
<?php echo pi(); // 3.1415926535898 echo M_PI; // 3.1415926535898 ?>
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