pip install gevent

public static function  uuid_gen()
{
    $chars = md5(uniqid(mt_rand(), true));
    $uuid = substr($chars, 0, 8) . '-'
        . substr($chars, 8, 4) . '-'
        . substr($chars, 12, 4) . '-'
        . substr($chars, 16, 4) . '-'
        . substr($chars, 20, 12);
    return $uuid;
}

/**
 * 生成MAC
 */
public static function mac_gen()
{
    $array = array(
        mt_rand(0x00, 0x7f),
        mt_rand(0x00, 0x7f),
        mt_rand(0x00, 0x7f),
        mt_rand(0x00, 0x7f),
        mt_rand(0x00, 0xff),
        mt_rand(0x00, 0xff)
    );
    return join(':', array_map(function ($v) {
        return sprintf("%02X", $v);
    }, $array));
}