← All built-ins / M_PI()
M_PI()
M_PI(...$args): float
Parameters
Takes no arguments.
Return value
The constant π as a callable fallback — prefer the constant.
Example
echo round(M_PI, 5);
3.14159
Takes no arguments.
The constant π as a callable fallback — prefer the constant.
echo round(M_PI, 5);
3.14159