Round fractions down
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    floor

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

    floor — Round fractions down

    Description

    floor(int|float $num): float

    Returns the next lowest integer value (as float) by rounding down num if necessary.

    Parameters

    num

    The numeric value to round

    Return Values

    num rounded to the next lowest integer. The return value of floor() is still of type float.

    Changelog

    Version Description
    8.0.0 num no longer accepts internal objects which support numeric conversion.

    Examples

    Example #1 floor() example

    <?phpecho floor(4.3);   // 4echo floor(9.999); // 9echo floor(-3.14); // -4?>

    See Also