一个TP项目里的方法看不明白,求指点!!谢谢

有个tp3项目,里面的一个方法我看不懂,请教一下大神,
  public function execute_man(){

        $user = session('userMsg');
        $res = M('depart_budget_execution')->where(['department_code' => $user['department_id']])->select();
        $this->assign('list',$res);
        $this->display();
    }
刚开始学,希望有大神给详细的指点,谢谢!

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转载自blog.csdn.net/qq_42507653/article/details/80861129