pi
(PHP 4, PHP 5, PHP 7, PHP 8)
pi — Get value of pi
Description
pi(): float
Returns an approximation of pi. Also, you can use the M_PI constant which yields identical results to pi().
Parameters
This function has no parameters.
Return Values
The value of pi as float.
Examples
Example #1 pi() example
<?php
echo pi(), PHP_EOL; // 3.1415926535898
echo M_PI, PHP_EOL; // 3.1415926535898
?>↑ and ↓ to navigate • Enter to select • Esc to close • / to open