(PHP 4, PHP 5, PHP 7)
floor — Round fractions down
floor ( float $value ) : float
Returns the next lowest integer value (as float) by rounding down value
if necessary.
value
The numeric value to round
value
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).
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