What are the best practices for rounding numbers in PHP to ensure accurate results?

When rounding numbers in PHP, it is important to use the correct rounding method to ensure accurate results. The round() function in PHP can be used to round numbers to the nearest integer, while number_format() can be used to round numbers to a specified number of decimal places. It is also important to be aware of potential precision issues when working with floating-point numbers in PHP.

// Round a number to the nearest integer
$number = 10.56;
$roundedNumber = round($number);
echo $roundedNumber;

// Round a number to 2 decimal places
$number = 10.56789;
$roundedNumber = number_format($number, 2);
echo $roundedNumber;