← All built-ins / pi()
pi()
pi(...$args): float
Parameters
Takes no arguments.
Return value
π as float. The constant M_PI is equivalent.
Example
echo pi(), " ", round(pi(), 2);
3.141592653589793 3.14
Takes no arguments.
π as float. The constant M_PI is equivalent.
echo pi(), " ", round(pi(), 2);
3.141592653589793 3.14