PHP. Руководство по PHP. 2005
pow
pow
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. Since PHP 4.2.0
pow() doesn't issue any warning.
Замечание:
PHP cannot handle negative bases.
Внимание |
In PHP 4.0.6 and earlier pow() always returned a float, and did not issue warnings. |