PHP has nice support for Mathematical processing. And for doing rounding off we generally need functions like ceil() and floor().

Lets see how to use these functions...

PHP ceil() Function

The ceil() function rounds the value "UPWARDS" to the nearest integer.

Check the code below

echo ceil(0.55);
The output of the above code will be 1.

PHP floor() Function

The floor() function rounds off the value "DOWNWARDS" to the nearest integer.
Check the code below
echo floor(0.55);
The output of the above code will be 0.