Laravel Carbon is a PHP extension that makes working with dates and times in web applications easy and efficient. One of its most useful features is the diffForHumans method, which displays the difference between two dates in a human-readable format. This method allows developers to pass several optional arguments to customize the output according to their requirements. The first argument $other specifies the date to compare, and if it is not provided, the current date and time are used. The second argument $absolute determines whether to show the difference in absolute or relative terms, while the third argument $short controls whether to display the difference in a short or long format. The fourth argument $parts specifies the number of parts to display. By using these arguments, developers can easily manipulate the output and make it more user-friendly. Overall, Laravel Carbon's diffForHumans method is a powerful tool that simplifies the handling of dates and times in web applications.