Are there any specific PHP functions or methods that can help with formatting numbers?

When working with numbers in PHP, it is common to need to format them in a specific way, such as adding commas for thousands separators or rounding to a certain number of decimal places. PHP provides several built-in functions and methods to help with number formatting, such as number_format() for adding commas as thousands separators and round() for rounding numbers to a specific number of decimal places.

// Example of using number_format() to format a number with thousands separators
$number = 1234567.89;
$formatted_number = number_format($number, 2); // Output: 1,234,567.89
echo $formatted_number;

// Example of using round() to round a number to 2 decimal places
$number = 12.3456;
$rounded_number = round($number, 2); // Output: 12.35
echo $rounded_number;