How can you ensure that a calculated value is rounded to a specific number of decimal places in PHP?

When working with calculated values in PHP, you can ensure that the result is rounded to a specific number of decimal places by using the `round()` function. This function takes two parameters: the value to be rounded and the number of decimal places to round to. Simply pass your calculated value and the desired number of decimal places to the `round()` function to achieve the desired result.

$calculatedValue = 10.56789;
$roundedValue = round($calculatedValue, 2); // Round to 2 decimal places
echo $roundedValue; // Output: 10.57