abstract：<?phpclass C{ public function doSomething() { echo __METHOD__, '我是C类|'; }}class B{ public function doSomething
<?php
class C
{
public function doSomething()
{
echo __METHOD__, '我是C类|';
}
}
class B
{
public function doSomething()
{
$bim = new C();
$bim->doSomething();
echo __METHOD__, '我是B类|';
}
}
class A
{
public function doSomething()
{
$bar = new B();
$bar->doSomething();
echo __METHOD__, '我是A类|';;
}
}
$class = new A();
$class->doSomething(); //C::doSomething我是C类|B::doSomething我是B类|A::doSomething我是A类|
Correcting teacher：查无此人Correction time：2019-06-11 09:15:43
Teacher's summary：完成的不错。依赖注入现在很流行，多了解。继续加油