PHP函数返回字符串

Question

我是PHP的新手.我有一个检查价格成本的功能.我想从这个函数返回变量以便全局使用:

<?
function getDeliveryPrice($qew){
    if ($qew=="1"){
        $deliveryPrice="60";
    } else {
        $deliveryPrice="20";
    }
    return $deliveryPrice;                          
}
// Assuming these two next lines are on external pages..
getDeliveryPrice(12);
echo $deliveryPrice; // It should return 20

?>

Answer 1

您只需将返回值存储在变量中:

$deliveryPrice = getDeliveryPrice(12);
echo $deliveryPrice; // will print 20

$deliveryPrice上面的变量是与函数内部不同的变量$deliveryPrice.由于范围可变,后者在函数外部不可见.