How does the number_format() function compare to the Round() and sprintf() functions in this context?

The number_format() function is used to format a number with grouped thousands and decimal points. It is specifically designed for formatting numbers for display purposes. In contrast, the round() function is used to round a number to a specified number of decimal places, while sprintf() allows for more complex formatting options including padding and alignment.

// Using number_format() to format a number for display
$number = 1234.56789;
$formatted_number = number_format($number, 2); // Output: 1,234.57
echo $formatted_number;