bcpow

Raise an arbitrary precision number to another (PHP 3, PHP 4, PHP 5)
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.

范例

例 315. bcpow() example

<?php

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

?>

参见

bcpowmod()bcsqrt().