   #PHP Manual Mathematical Functions pi rad2deg

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                                      pow

   (PHP 3, PHP 4 )
   pow -- Exponential expression

Description

   number pow ( number base, number exp)

   Returns base raised to the power of exp. If possible, this function
   will return an integer.

   If the power cannot be computed, a warning will be issued, and pow()
   will return FALSE.

   Example 1. Some examples of pow()
   <?php
   var_dump(pow(2, 8)); // int(256)
   echo pow(-1, 20); // 1
   echo pow(0, 0); // 1
   echo pow(-1, 5.5); // error
   ?>

   Warning

   In PHP 4.0.6 and earlier pow() always returned a float, and did not
   issue warnings.

   See also exp() and sqrt().
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