gmp_jacobi

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_jacobi — Jacobi symbol

gmp_jacobi(GMP|int|string $num1, GMP|int|string $num2): int

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

num1: A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).
num2: A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).
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

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