PHP Manual: Close directory handle

void closedir(resourcenull $dir_handle = null)

Closes the directory stream indicated by dir_handle.

dir_handle: A directory handle resource previously opened with opendir. If dir_handle is null the last handle opened using opendir will be used.

No value is returned.

Version	Description
8.5.0	Using `null` for `dir_handle` is now deprecated. Instead, the last opened directory handle should be explicitly provided.
8.0.0	`dir_handle` is now nullable.

For a complete example refer to the opendir documentation.

closedir