相关疑难解决方法(0)

如果变量$ cardtype ==,我试图回显某些值

     $paymentmethod = if( $cardtype == 'visa' ) echo 'VSA'; 
elseif ( $cardtype == 'mastercard' ) echo 'MSC'; 
elseif ( $cardtype == 'mastercard' ) echo 'MSC'; 
elseif ( $cardtype == 'maestro' ) echo 'MAE'; 
elseif ( $cardtype== 'amex' ) echo 'AMX';

我该怎么办？