How important is it to refer to the PHP documentation for functions like round?

It is important to refer to the PHP documentation for functions like round to understand how they work, what parameters they accept, and what they return. This ensures that you are using the function correctly and getting the desired result in your code.

// Example of using round function with proper documentation reference
$number = 10.5;
$rounded_number = round($number);
echo $rounded_number;