I used thinkPHP according to the manual ->order()->limit(1) but nothing works?

The following is the code. There is a sentence that is fine. As long as you add sorting and restrictions, an error will be reported? Please tell me why?

<code>$stmt=D('classOne');
$db = $stmt->where("id>10")->select();    //这句完全没有问题,
$db =$stmt->where("id>10")->order('id desc')->limit(1)->select();    //这句完出错了?为什么?
echo '<pre class="brush:php;toolbar:false">';print_r($db);echo '

';

<code>:(
Call to a member function limit() on null
错误位置
FILE: C:\AppServ\www\yb1\yangbins\Home\Controller\CjdController.class.php 　LINE: 68
ThinkPHP3.2.3 { Fast & Simple OOP PHP Framework } -- [ WE CAN DO IT JUST THINK ]</code>

---

The following is the reason:
It turns out that I have an extra one in classoneModel.class.php:

<code> function __call($methodname, $args)
    {
        echo "这里是 class shopModel ,你调用的方法{$methodname},参数: (".implode(" , ",$args).')  不存在....<br>';
    }</code>

Why did I not cover limit() and desc(), but just covered the magic method, and the whole file went wrong??

Reply content:

The following is the code. There is a sentence that is fine. As long as you add sorting and restrictions, an error will be reported? Please tell me why?

<code>$stmt=D('classOne');
$db = $stmt->where("id>10")->select();    //这句完全没有问题,
$db =$stmt->where("id>10")->order('id desc')->limit(1)->select();    //这句完出错了?为什么?
echo '<pre class="brush:php;toolbar:false">';print_r($db);echo '

';

<code>:(
Call to a member function limit() on null
错误位置
FILE: C:\AppServ\www\yb1\yangbins\Home\Controller\CjdController.class.php 　LINE: 68
ThinkPHP3.2.3 { Fast & Simple OOP PHP Framework } -- [ WE CAN DO IT JUST THINK ]</code>

---

The following is the reason:
It turns out that I have an extra one in classoneModel.class.php:

<code> function __call($methodname, $args)
    {
        echo "这里是 class shopModel ,你调用的方法{$methodname},参数: (".implode(" , ",$args).')  不存在....<br>';
    }</code>

Why did I not cover limit() and desc(), but just covered the magic method, and the whole file went wrong??

The reason for this error is that order() this method does not return the Model class itself. This is correct in the Model code. It seems that you instantiated it classOneModelInheritance overrides in this modelorder()This method, and it is not handled correctly, please check whether it is done this way.