PHP 忒聊
綴豖
ヶ輛
pow
(PHP 3, PHP 4)
Description
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.
瞰赽 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?
劑豢
In PHP 4.0.6 and earlier pow() always returned a float, and did not issue warnings.
See also exp() and sqrt().
綴豖
れ萸
ヶ輛
pi
奻珨撰
rad2deg