(PHP 4 >= 4.0.4, PHP 5)
gmp_legendre — Legendre symbol
Compute the » Legendre symbol of a and p. p should be odd and must be positive.
A GMP number resource .
Example #1 gmp_legendre() example
<?php
echo gmp_legendre("1", "3") . "\n";
echo gmp_legendre("2", "3") . "\n";
?>
The above example will output:
1 0