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 because the value range of float is usually bigger than that of int. 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 ?>
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https://www.php.net/manual/en/function.floor.php