Question

php thinkphp 怎么下面语句不能读取数据库某一字段？

$model=M(user);
$_SESSION['username']=$_POST['uname'];
$s=$_SESSION['username']
$model->field('all_point')->where('username=$s')->select();
var_dump($model);
:(

SQLSTATE[42S22]: Column not found: 1054 Unknown column '$s' in 'where clause'
$model那行报错

Answer 1

$data=$model->field('all_point')->where('username=$s')->select();
var_dump($data);