PHP - gmp_legendre() Function

Definition and Usage

The gmp_legendre() function calculates the Legendre symbol.

The gmp_legendre() function will return the legendre symbol for the given GMP numbers. The second GMP number p has to be odd and positive.

gmp_legendre ( GMP $a , GMP $p ) : int

Sr.No	Parameter & Description
1	a It can a GMP resource number , a gmp object or a numeric string.
2	b It can a GMP resource number , a gmp object or a numeric string. The value of b has to be positive and odd.

Sr.No

Parameter & Description

It can a GMP resource number , a gmp object or a numeric string.

It can a GMP resource number , a gmp object or a numeric string. The value of b has to be positive and odd.

PHP gmp_legendre() function returns legendre symbol for the given GMP numbers.

This function will work from PHP Version greater than 5.0.0.

Working of gmp_legendre() −

<?php
   $ls = gmp_legendre("1", "3");
   echo "The Legendre symbol of 1/3 is :".$ls;
?>

This will produce following result −

The Legendre symbol of 1/3 is :1

Working of gmp_legendre() −

<?php
   $ls = gmp_legendre("3", "11");
   echo "The Legendre symbol of 3/11 is :".$ls;
?>

This will produce following result −

The Legendre symbol of 3/11 is :1

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