php编码变量的麻烦

Question

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？

Answer 1

$types = array( 'visa' => 'VSA', 'mastercard' => 'MSC', 
                'maestro' => 'MAE', 'amex' => 'AMX' );

echo ( isset( $types[ $cardtype ] ) ) ? $types[ $cardtype ] : 'Wrong card type';