function IsWeixinOrAlipay()
{
    $ua = $_SERVER['HTTP_USER_AGENT'];
    if (strpos($ua, 'MicroMessenger')) {
        echo '微信';
    }
    elseif (strpos($ua, 'AlipayClient')) {
        echo "支付寶";
    }
     elseif (strpos($ua, 'QQ/')) {
        echo "QQ";
    }else{
        echo "其他";
    }
}