PHP 8.4.0 RC4 available for testing

    gmp_sqrt

    (PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

    gmp_sqrt — Calculate square root

    Description

    gmp_sqrt(GMP|int|string $num): GMP

    Calculates square root of num.

    Parameters

    num

    A GMP object, an int or a numeric string.

    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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