addMempic.php

public function addMempic($file, $path)
    {
        $id = md5(uniqid(microtime() . mt_rand()));
        $extensions = $file->getClientOriginalExtension();
        $newname = $id . '.' . $extensions;
        $file->move($path, $newname);
        $lujing = '/'.$path.'/'.$newname;
        $bak_url=  str_replace(date("Ym"),'bak',$path);
        if (!file_exists($bak_url)) {
            mkdir($bak_url, 0777, true);
        }
        copy($path.'/'.$newname,$bak_url.'/'.$newname );

        return $lujing;
    }