The pathinfo() function in PHP returns information about the path of a file or directory in the form of an associative array or a string, depending on the option chosen in $option.

The chmod() function changes the mode of a file, but what does this mean? It means that we will be modifying the permissions of that file or directory.

PHP DateInterval Class represents an interval of time between two dates.

The DateTimeZone class is responsible for representing a timezone.

DateTime is a class for representing both the date and the time.