5.5.15

gmp_sqrt

(PHP 4 >= 4.0.4, PHP 5)

gmp_sqrtCalculate square root

Description

GMP gmp_sqrt ( GMP $a )

Calculates square root of a.

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.

Return Values

The integer portion of the square root, as a GMP number.

Examples

Example #1 gmp_sqrt() example

<?php
$sqrt1 
gmp_sqrt("9");
$sqrt2 gmp_sqrt("7");
$sqrt3 gmp_sqrt("1524157875019052100");

echo 
gmp_strval($sqrt1) . "\n";
echo 
gmp_strval($sqrt2) . "\n";
echo 
gmp_strval($sqrt3) . "\n";
?>

The above example will output:

3
2
1234567890

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