发送电子邮件PMPRO代码生成的randow密码

Question

我使用此代码向付费会员专业插件中的用户发送凭证：

https://gist.github.com/strangerstudios/5331923

结帐时，我使用PayPal Express并通过支票付款;

我修改了此代码，因为我在结帐时只向PayPal用户发送凭据。在我的代码中，它似乎无法识别网关PayPal。

function my_generate_passwords() {

    //Get primary gateway
    $setting_gateway = get_option("pmpro_gateway");

    if (!empty($_REQUEST['username']) && empty($_REQUEST['password']) && $setting_gateway == "paypalexpress") { //if paypalexpress

        $_REQUEST['password'] = pmpro_getDiscountCode() . pmpro_getDiscountCode(); //using two random discount codes if paypalexpress

        $_REQUEST['password2'] = $_REQUEST['password'];
    }

    // If pay by check ... I try to insert else to see if the system do the switch condition
    else {

        $_REQUEST['password'] = pmpro_getDiscountCode(); //using one random discount codes if paybycheck

        $_REQUEST['password2'] = $_REQUEST['password'];
    }
}

add_action("init", "my_generate_passwords");

我错了吗？