关于PHP中依赖注入的详细介绍

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class Test

{

 public function index(Demo $demo,Apple $apple){

  $demo->show();

  $apple->fun();

 }

}

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$demo = new Demo();

$apple = new Apple();

$obj = new Test();

$obj->index($demo,$apple);

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$obj = new dependencyInjection();

$obj->fun("Test","index");

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<?php

/**

 * Created by PhpStorm.

 * User: zhezhao

 * Date: 2016/8/10

 * Time: 19:18

 */

class dependencyInjection

{

 function fun($className,$action){

  $reflectionMethod = new ReflectionMethod($className,$action);

  $parammeters = $reflectionMethod->getParameters();

  $params = array();

  foreach ($parammeters as $item) {

   preg_match(‘/> ([^ ]*)/‘,$item,$arr);

   $class = trim($arr[1]);

   $params[] = new $class();

  }

  $instance = new $className();

  $res = call_user_func_array([$instance,$action],$params);

  return $res;

 }

}

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public function index(UserModel $userModel,MessageModel $messageModel){

 $userList = $userModel->getAllUser();

 $messageList = $messageModel->getAllMessage();

}