PHP Manual: Jacobi symbol

int gmp_jacobi(GMPintstring $num1, GMPintstring $num2)

Computes » Jacobi symbol of num1 and num2. num2 should be odd and must be positive.

num1

A GMP object, an int or a numeric string.

num2

A GMP object, an int or a numeric string.

Should be odd and must be positive.

A GMP object.

Example #1 gmp_jacobi example

<?php
echo gmp_jacobi("1", "3") . "\n";
echo gmp_jacobi("2", "3") . "\n";
?>

The above example will output:

1
0

gmp_jacobi