What does php pi function mean?

The pi() function is a built-in function in PHP, used to obtain the value of pi. It can return the approximate value of pi "3.1415926535898"; the syntax is "pi();". This function is simply used to obtain the pi value; the named constant "M_PI" produces the same result as pi().

What does the pi() function mean?

Function: Get the pi value.

Syntax:

pi()

Parameters: There are no parameters in the pi() function.

Explanation: This function is simply used to obtain the pi value.

php pi() function example

<?php
echo pi();
?>

Output:

3.1415926535898

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