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    sqrt

    (PHP 4, PHP 5, PHP 7, PHP 8)

    sqrt — Square root

    Açıklama

    sqrt(float $num): float

    Returns the square root of num.

    Bağımsız Değişkenler

    num

    The argument to process

    Dönen Değerler

    The square root of num or the special value NAN for negative numbers.

    Örnekler

    Örnek 1 sqrt() example

    <?php
    // Precision depends on your precision directive
    echo sqrt(9); // 3
    echo sqrt(10); // 3.16227766 ...
    ?>

    Ayrıca Bakınız

    • pow() - Exponential expression
    • M_SQRTPI - sqrt(pi)
    • M_2_SQRTPI - 2/sqrt(pi)
    • M_SQRT2 - sqrt(2)
    • M_SQRT3 - sqrt(3)
    • M_SQRT1_2 - 1/sqrt(2)

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    User Contributed Notes 1 note

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    -1
    jouhni at web dot de
    19 years ago
    To get any root of a number your can use the pow() function:

    pow(8, 1/3)

    which gives you the third root of eight.

    Jouhni
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