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(PHP 5, PHP 7 >= 5.6.0)
gmp_root — Take the integer part of nth root
$a
, int $nth
)
Takes the nth
root of a
and
returns the integer component of the result.
a
可以是一个 GMP 数据 resouce ,或一个可以转换为数值的字符串。
nth
The positive root to take of a
.
The integer component of the resultant root, as a GMP number.