abstract：<?php class Girl{ public function work() { return '會做飯'; } public function hobby() { return '愛購物'; }}class Boy{ public function getInfo() { $girl = new Girl; return '我的

<?php 

class Girl

{

public function work()

{

return '會做飯';

}

public function hobby()

{

return '愛購物';

}

}

class Boy

{

public function getInfo()

{

$girl = new Girl;

return '我的女朋友'.$girl->work();

}

}

$boy = new Boy;

echo $boy->getInfo();

echo "<hr>";

//1.以構(gòu)造方法來實現(xiàn)

class Boy2

{

private $request = null;

public function __construct(Girl $request)

{

$this->girl = $request;

}

public function getInfo()

{

return '我的女朋友'.$this->girl->work();

}

}

$girl = new Girl;

$boy2 = new Boy2($girl);

echo $boy2->getInfo();

echo "<hr>";

class Boy3

{

public function buy(Girl $girl)

{

return '我的女朋友'.$girl->hobby();

}

}

$girl = new Girl;

$boy3 = new Boy3;

echo $boy3->buy($girl);

echo "<hr>";

 ?>

Correcting teacher：韋小寶Correction time：2019-01-07 11:54:00
Teacher's summary：寫的很不錯 想這種依賴注入和后面的設(shè)計模式基本上都是實際的開發(fā)中利用起來很方便的東西 課后沒事一定要多練習(xí)才可以