bcpow
    (PHP 3, PHP 4 , PHP 5)
bcpow -- 
     Raise an arbitrary precision number to another
    
Description
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.
    
Examples
Example 1. bcpow() example 
<?php
  echo bcpow(4.2, 3, 2); // 74.08
  ?>
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