delete_files('/path/for/the/directory/');

/*
 * php delete function that deals with directories non-recursively
 */
function delete_files($target) {
        $files = glob( $target . '*', GLOB_MARK );
        foreach( $files as $file )
        {
            if(is_dir($file)){
                rmdir( $file );
            } elseif(is_file($file)) {
                unlink( $file );
            }
        }
}