怎么获取不得数据的

Question

 /***

     * 获取用户名

     */

 public function left(){

$admin_id = session('admin_id');

$user_name=M( "admin");

$user_name=$user_name->where($admin_id )->find();

$this->assign('user_name',$user_name );

$this->display();

}

用户名：<td>{$user_name}</td>

Answer 1

where要给出查询的字段，列如where('id',$admin_id)

Answer 2

首先要看你的$user_name有没有拿到值；然后看

Answer 3

where语法错了吧