round() / floor() / ceil()
function
round() rounds to specified decimal places; floor() always rounds down; ceil() always rounds up.
Syntax
round(float $num, int $precision = 0): float
Example
php
<?php
echo round(4.5); // 5
echo round(3.14159, 2); // 3.14
echo floor(4.9); // 4
echo ceil(4.1); // 5
echo number_format(1234567.89, 2, '.', ','); // 1,234,567.89