PHP Program to Round a floating-point number to its nearest integer

In PHP, you can use the `round()` function to round a floating-point number to its nearest integer. The `round()` function takes one argument, which is the number to be rounded.

Here's an example :

Program :

<?php
$number = 3.7;
$rounded_number = round($number);

echo "The rounded number is $rounded_number\n";
?>

Output :

The rounded number is 4

If the number is exactly halfway between two integers, the `round()` function will round it to the nearest even integer. This is known as "banker's rounding". For example :

Program :

<?php
$number = 2.5;
$rounded_number = round($number);

echo "The rounded number is $rounded_number\n";
?>

Output :

The rounded number is 2

If you want to always round up or down, regardless of whether the number is exactly halfway between two integers, you can use the `ceil()` or `floor()` functions, respectively. For example :

<?php
$number = 2.5;
$rounded_up = ceil($number);
$rounded_down = floor($number);

echo "The rounded up number is $rounded_up\n";
echo "The rounded down number is $rounded_down\n";
?>â€‹

Output :

The rounded up number is 3
The rounded down number is 2