The dirname() function allows us to obtain the path of parent directories based on the specified path and level.

The basename() function returns the name of the last element in the given path. The suffix option allows us to remove any suffix it has.

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.