(PHP 4 >= 4.0.4, PHP 5, PHP 7)
Modulo operation
GMP gmp_mod ( GMP $n, GMP $d )
Calculates n modulo d. The result is always non-negative, the sign of d is ignored.
Parameters:
n
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.
d