gmp_gcd
gmp_gcd
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_gcd — Calculate GCD
Description
GMP gmp_gcd ( GMP $a , GMP $b )
Calculate greatest common divisor of a and b. The result is always positive even if either of, or both, input operands are negative.
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.
-
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() example
<?php
$gcd = gmp_gcd("12", "21");
echo gmp_strval($gcd) . "\n";
?> The above example will output:
3
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.gmp-gcd.php
