abstrakt：二個數(shù)值相加<?phpfunction leijia($a,$b){    $c = $a + $b;    return $c;}echo leijia(3,9);/** * Created by PhpStorm. * User: Administrator * Date: 2019/3/19 * Time: 14:19 */

二個數(shù)值相加

<?php

function leijia($a,$b)
{
   $c = $a + $b;
   return $c;
}
echo leijia(3,9);

/**
* Created by PhpStorm.
* User: Administrator
* Date: 2019/3/19
* Time: 14:19
*/

Korrigierender Lehrer：西門大官人Korrekturzeit：2019-03-20 09:36:12
Zusammenfassung des Lehrers：函數(shù)分為有參和無參函數(shù)，函數(shù)的參數(shù)叫“形參”，調(diào)用函數(shù)的時候傳遞的參數(shù)叫實參