摘要：//1. 构造方法实现依赖注入class Boy1{ private $girl = null; public function __construct(Girl $girl) { $this->girl = $girl; } public function getInfo() { // $girl = new Girl(); // return '我的女朋友'.$gi
//1. 构造方法实现依赖注入
class Boy1
{
private $girl = null;
public function __construct(Girl $girl)
{
$this->girl = $girl;
}
public function getInfo()
{
// $girl = new Girl();
// return '我的女朋友'.$girl->work();
return '我的女朋友'.$this->girl->work();
}
}
//将实例化外部对象的语句放在了类的外部
$girl = new Girl;
$boy1 = new Boy1($girl);
echo $boy1->getInfo();
echo '<hr>';
//2.用普通方式实现依赖注入
class Boy2
{
public function buy(Girl $girl)
{
return '我的女朋友'.$girl->hobby();
}
}
$girl = new Girl;
$boy2 = new Boy2();
echo $boy2->buy($girl);
批改老师：天蓬老师批改时间：2018-11-02 13:48:24
老师总结：不错,依赖注入,要点就是不要在方法中实例化对象,实例化是在客户端之外完成
