批改状态:未批改
老师批语:
一、use 来导入空间/别名
1.创建具有命名空间的Family类
代码如下:Family.php
<?php
namespace Family;
/**
* 创建 Family类
*/
class Family
{
protected $familyName= '';
protected $familyAddr = '';
protected $postCodes = '';
const COMPANY = '严桥中学';
//构造方法
public function __construct($familyName='温馨之家',$familyAddr='安徽省无为县严桥镇', $postCodes='238381')
{
//如果传参,则使用新值初始化属性,否则使用默认值
$familyName ? ($this->familyName = $familyName) : $this->familyName;
$familyAddr ? ($this->familyAddr = $familyAddr) : $this->familyAddr;
$postCodes ? ($this->postCodes = $postCodes) : $this->postCodes;
}
//查询器
public function __get($attribute)
{
return $this->$attribute;
}
//设置器
public function __set($attribute,$value)
{
return $this->$attribute = $value;
}
//在类中访问类常量,使用self来引用当前类名
public function getConst()
{
//类内部也可以直接使用当前类名
// return Family::COMPANY;
//推荐使用self:当类名改变时,不必修改内部对它的引用
return self::COMPANY;
}
public function where(){
return $this->familyAddr;
}
}点击 "运行实例" 按钮查看在线实例
2. 创建具有命名空间的Member类 Member.php
<?php
namespace Member;
require 'Family.php';
/**
* 创建成员类:Person1
*/
class Member
{
//属性声明
private $name='';// 姓名
private $age=0;// 年龄
private $hobby=[];// 爱好
private $relation='';// 关系
private $data=[];//自定义数据收集器
//构造方法
public function __construct($name='',$age=0,array $hobby=[],$relation='' )
{
$this->name=$name;
$this->age=$age;
$this->hobby=$hobby;
$this->relation=$relation;
}
//魔术方法:查询器
public function __get($attribute)
{
$msg=null;
if(isset($this->$attribute)){
$msg= $this->$attribute;
}elseif(isset ($this->data[$attribute])){
$msg= $this->data[$attribute];
}else{
$msg='无此属性';
}
return $msg;
}
//魔术方法:设置器
public function __set($attribute,$value)
{
if(isset($this->$attribute)){
$this->$attribute=$value;
}else{
$this->data[$attribute]=$value;//如果属性不存在,创建它并保存到类属性$data数组中
}
}
}
$member1 = new Member('钱天行',12,['看书','学习']);
echo $member1->name;
use Family\Family;
$family1 = new Family();
echo '出生在'.$family1->familyName.',他喜欢'.$member1->hobby[0].'和'.$member1->hobby[1].'!';点击 "运行实例" 按钮查看在线实例
二、运行结果

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