Deleting all files from a folder using php

Here is the code to this.

<?php

function deleteDirectory($dirPath) {

    if (is_dir($dirPath)) {

        $objects = scandir($dirPath);

        foreach ($objects as $object) {

            if ($object != "." && $object !="..") {

                if (filetype($dirPath . DIRECTORY_SEPARATOR . $object) == "dir") {

                    deleteDirectory($dirPath . DIRECTORY_SEPARATOR . $object);

                } else {

                    unlink($dirPath . DIRECTORY_SEPARATOR . $object);

                }

            }

        }

    reset($objects);

    rmdir($dirPath);

    }

}

echo deleteDirectory("old");

?>