PHP Manual
GMP Functions
Take the integer part of nth root

gmp_root

(PHP 5 >= 5.6.0, PHP 7, PHP 8)

gmp_root — Take the integer part of nth root

Description

gmp_root(GMP|int|string $num, int $nth): GMP

Takes the nth root of num and returns the integer component of the result.

Parameters

num: A GMP object, an int or a numeric string.
nth: The positive root to take of num.

Return Values

The integer component of the resultant root, as a GMP number.

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