Difference Between Ceil and Floor Function in PHP

Introduction

In this article I will explain Ceil() and Floor() functions in PHP. The ceil() and floor() functions are math functions. First of all I will discuss the ceil() function used to get the next highest integer value by rounding fractions up. The ceil() function is basically used for pagination.

Syntax

float Ceil($num_value);

Name	Description
num_value	The value to round

This function returns the value rounded up to the next highest integer value. It returns a rounded value of float.

Example

<?php

$a=ceil(9.4);

$b=ceil(29.449);

$c=ceil(-8.4);

$d=ceil(801.9);

$e=ceil(1200.94);

echo "The Ceil value of 9.4 is ". $a . " " ;

echo "The Ceil value of 29.449 is ". $b . " " ;

echo "The Ceil value of -8.4 is ". $c . " " ;

echo "The Ceil value of 801.9 is ". $d . " " ;

echo "The Ceil value of 1200.94 is ". $e . " ";

Output

Next, I will discuss the floor() function. The floor function converts a specified numeric value to the next lowest integer value by rounding.

Syntax

float Floor($num_value);

Name	Description
num_value	Pass any numeric value.

Example

<?php

$a=20;

$b=-222.14;

$c=200.25;

$d=-500;

$a=floor($a);

$b=floor($b);

$c=floor($c);

$d=floor($d);

echo "The floor value of 20 is $a ";

echo "The floor value of -222.14 is $b ";

echo "The floor value of 200.25 is $c ";

echo "The floor value of -500 is $d ";

Output
Floor function in php.jpg