(PHP 4 >= 4.0.4, PHP 5, PHP 7)
Legendre symbol
int gmp_legendre ( GMP $a, GMP $p )
Compute the » Legendre symbol of a and p. p should be odd and must be positive.
Parameters:
a
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.
p
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.
Should be odd and must be positive.
Returns:
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
Examples:
gmp_legendre() example
<?php
echo gmp_legendre("1", "3") . "\n";
echo gmp_legendre("2", "3") . "\n";
?>
The above example will output:
1 0
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