PHP floor() Function

Definition and Usage

The floor() function is another in-built function in PHP iterpreter. This function accepts any float number as argument and rounds it down to the next lowest integer.

This function always returns a float number as range of float is bigger than that of integer.

Syntax

floor ( float $num ) : float

Parameters

Return Values

PHP floor() function returns the largest integer less than or equal to given parameter.

PHP Version

This function is available in PHP versions 4.x, PHP 5.x as well as PHP 7.x.

Example

<?php
   $arg=-3.95;
   $val=floor($arg);
   echo "floor(" . $arg . ") = " . $val;
?>

Output

This will produce following result −

floor(-3.95) = -4