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. This function returns false in case of an error (e.g. passing an array).

Changelog

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

Examples

Example #1 floor() example

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

See Also