What is the significance of replacing 60*60 with 3600 in the PHP script?

Replacing 60*60 with 3600 in a PHP script is significant because it simplifies the code and makes it more readable. By using the numeric value directly, it eliminates the need for the multiplication operation, making the code more efficient. This change also improves the code's maintainability as it is easier to understand the purpose of the value 3600 compared to 60*60.

// Before
$seconds_in_an_hour = 60 * 60;

// After
$seconds_in_an_hour = 3600;