(PHP 4, PHP 5, PHP 7, PHP 8)
floor — Round fractions down
$num): float
Returns the next lowest integer value (as float) by rounding down
num if necessary.
numThe numeric value to round
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).
| Version | Description |
|---|---|
| 8.0.0 |
num no longer accepts internal objects which support
numeric conversion.
|
Example #1 floor() example
<?php
echo floor(4.3); // 4
echo floor(9.999); // 9
echo floor(-3.14); // -4
?>