Laravel - 尝试访问 int 类型值的数组偏移量

Question

当我尝试向数据库提交发布请求时遇到问题。有趣的是，该错误仅在我使用 PHP 7.4.2 版本时发生。在 PHP 7.3.9 版本中一切正常。我正在使用 Laravel 6.17。Laravel 什么时候解决这个问题？这是我的堆栈跟踪，当错误出现时。Trying to access array offset on value of type int   in CreateCourseController.php line 176at HandleExceptions->handleError()in CreateCourseController.php line 176at CreateCourseController->createDates()in CreateCourseController.php line 101at CreateCourseController->createCourse()at call_user_func_array()in Controller.php line 54at Controller->callAction()in ControllerDispatcher.php line 45at ControllerDispatcher->dispatch()in Route.php line 219at Route->runController()in Route.php line 176at Route->run()in Router.php line 681at Router->Illuminate\Routing\{closure}()in Pipeline.php line 130at Pipeline->Illuminate\Pipeline\{closure}()in SubstituteBindings.php line 41at SubstituteBindings->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in VerifyCsrfToken.php line 76at VerifyCsrfToken->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in ShareErrorsFromSession.php line 49at ShareErrorsFromSession->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in StartSession.php line 56at StartSession->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in AddQueuedCookiesToResponse.php line 37at AddQueuedCookiesToResponse->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in EncryptCookies.php line 66at EncryptCookies->handle()in Pipeline.php line 171at Pipeline->Illuminate\Pipeline\{closure}()in Pipeline.php line 105at Pipeline->then()in Router.php line 683at Router->runRouteWithinStack()in Router.php line 658at Router->runRoute()in Router.php line 624at Router->dispatchToRoute()in Router.php line 613at Router->dispatch()in Kernel.php line 170

Answer 1

Laravel 存储库中已经列出了类似的问题

根据PHP-Doc，这是一个向后不兼容的变化PHP 7.4

非数组的数组式访问

bool, int, floator resourceas an array(例如$null["key"]) 现在将生成通知。

Answer 2

composer update为我的案例工作：

我有一个Laravel 5.6应用程序，带有Php 7.1.

此外，我必须更改laracasts/generators为fromcomposer.json才能开始，例如：^1.0dev-mastercomposer update

"laracasts/generators": "^1.0"

开始在一些旧项目上解决此问题，问题发生php artisan migrate在composer install.

https://github.com/spatie/laravel-permission/issues/1370#issuecomment-676556816

Answer 3

您可能正在尝试访问非数组类型（可能是对象类型）。

我也遇到过同样的情况，但它的不同之处在于一个片段访问一个对象，而另一个片段访问一个有效的数组类型。

下面的代码产生错误Trying to access array offset of value of type int

$mymodel = MyModel::where(array(

            'someid' => $somevar

        ))->get();

foreach($mymodel as $data){

     //etc

}

我尝试将其更新为：

$mymodel = MyModel::where(array(

            'someid' => $somevar

        ))->get()->toArray();

foreach($mymodel as $data){

     //etc

}

但是，您发布代码会非常有帮助，以便我们进一步检查。

Answer 4

这是关于PHP版本的。在 php 7.4rc 中，通过键访问数组，有时会导致错误。这个错误很少发生在 php 7.2 上。检查数组是否有成员只需使用empty($array)函数