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PHP Manual [gmp_root]

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PHP Manual || GMP Functions

(PHP 5 >= 5.6.0, PHP 7)

gmp_rootTake the integer part of nth root


gmp_root ( GMP $a , int $nth ) : GMP

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



Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.


The positive root to take of a.

Return Values

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

PHP Manual || GMP Functions