GMP_GCD(3) 1 GMP_GCD(3)
gmp_gcd - Calculate GCD
SYNOPSIS
GMP gmp_gcd (GMP $a, GMP $b)
DESCRIPTION
Calculate greatest common divisor of $a and $b. The result is always positive even if either of, or both, input operands are negative.
PARAMETERS
o $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.
o $b
-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.
RETURN VALUES
A positive GMP number that divides into both $a and $b.
EXAMPLES
Example #1
gmp_gcd(3) example
<?php
$gcd = gmp_gcd("12", "21");
echo gmp_strval($gcd) . "
";
?>
The above example will output:
3
PHP Documentation Group GMP_GCD(3)
