(PHP 3, PHP 4 )

bcpow --  Raise an arbitrary precision number to another


string bcpow ( string x, string y [, int scale])

Raise x to the power y. The optional scale can be used to set the number of digits after the decimal place in the result.

例子 1. bcpow() example


echo bcpow(4.2, 3, 2); // 74.08


See also bcpowmod(), and bcsqrt().