基于PHP 面向对象之成员方法详解
用一个列子来读解成员方法:大家可以自己动手写一写,加深理解。
这样一个需求; 希望人可以说话, 做算术题.......,这样就需要使用到成员方法:
1、添加speak 成员方法,输出 我是小明
2、添加jisuan 成员方法,可以计算从 1+..+1000的结果
3、修改jisuan 成员方法,该方法可以接收一个数n,计算 1+..+n 的结果
4、添加add 成员方法,可以计算两个数的和
参考代码:
复制代码 代码如下:
class Person{
public $name;
public $age;
//添加成员方法
public function speak(){
echo "我是小明";
}
public function jisuan(){
//计算从 1+..+1000的结果
$result =0;
for($i=1;$i $result+=$i;
}
//把计算结果ruturn 返回
return $result;
}
public function jisuan2($n){
//计算从 1+..+n的结果
$result=0;
for($i=1;$i $result+=$i;
}
//return
return $result;
}
//计算2个数的和
public function add($num1,$num2){
return $num1+$num2;
}
}
$person1=new Person;
//人说话
$person1->speak().'
';
//计算
echo '
'.$person1->jisuan();
//echo '
'.$person1->jisuan(100);
//带参数的
echo '计算的结果是:'.$person1->jisuan2(5);
//计算2个数的和
echo "
50+50=".$person1->add(50,51);
?>

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