abstract：class People{ private $cookie; public function __construct(Cookie $cookie){ //再控制器中填写依赖注入参数 $this->cookie = $cookie; } public function eat(){&nb
class People{
private $cookie;
public function __construct(Cookie $cookie){ //再控制器中填写依赖注入参数
$this->cookie = $cookie;
}
public function eat(){ //也可以在eat()方法中填写依赖注入参数
return '人们喜欢吃'.$this->cookie->color();
}
}
class Cookie{
public function color()
{
return '巧克力色的甜甜圈';
}
}
$cookie = new Cookie;
$people = new People($cookie);
echo $people->eat();依赖注入的优势：
再外部实例化对象，解决了耦合度太高的弊端。
Correcting teacher：查无此人Correction time：2019-03-16 09:33:42
Teacher's summary：现在依赖注入用的越来越多，新技术都要玩熟，才不掉队。继续加油