Question

我已经多次更新了这个问题，但原来的问题大部分都是完整的，所以我的思维过程更容易理解。我已经为每个人添加了一个简短的摘要，以决定他们是否能够帮助解决这个问题。非常感谢任何帮助。

摘要

很少发生错误（每2-4周一次）。
发生错误后，每次访问数据库的进一步请求也会崩溃并出现相同的错误
在laravel / framework
到目前为止，错误只发生在我们这个应用程序的实时服务器上，因此我们不能保留错误并开始调试，但必须对其进行热修复以保持正常运行时间。
我们确实遇到了一些随机断开连接的问题（很少）。这开始于同一时刻。也许问题是在构建PDO连接时断开连接？

堆栈

Apache 2.4.32
PHP 7.1.15
MariaDB 10.2.6

详细问题

我们在其中一个laravel项目中遇到以下错误：

[2018-05-29 11:02:05] production.ERROR:
Symfony\Component\Debug\Exception\FatalThrowableError: Illegal offset type in C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php:245
Stack trace:
#0 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php(183): Illuminate\Database\Connectors\ConnectionFactory->createConnector(Array)
#1 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}()
#2 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(883): call_user_func(Object(Closure))
#3 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(445): Illuminate\Database\Connection->getPdo()
#4 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(640): Illuminate\Database\Connection->Illuminate\Database\{closure}('insert into `lo...', Array)
#5 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(607): Illuminate\Database\Connection->runQueryCallback('insert into `lo...', Array, Object(Closure))
#6 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(450): Illuminate\Database\Connection->run('insert into `lo...', Array, Object(Closure))
#7 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(404): Illuminate\Database\Connection->statement('insert into `lo...', Array)
#8 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Query\Processors\Processor.php(32): Illuminate\Database\Connection->insert('insert into `lo...', Array)
#9 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php(2138): Illuminate\Database\Query\Processors\Processor->processInsertGetId(Object(Illuminate\Database\Query\Builder), 'insert into `lo...', Array, 'id')
#10 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(1251): Illuminate\Database\Query\Builder->insertGetId(Array, 'id')
#11 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php(684): Illuminate\Database\Eloquent\Builder->__call('insertGetId', Array)
#12 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php(649): Illuminate\Database\Eloquent\Model->insertAndSetId(Object(Illuminate\Database\Eloquent\Builder), Array)
#13 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php(518): Illuminate\Database\Eloquent\Model->performInsert(Object(Illuminate\Database\Eloquent\Builder))
#14 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(734): Illuminate\Database\Eloquent\Model->save()
#15 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Support\helpers.php(950): Illuminate\Database\Eloquent\Builder->Illuminate\Database\Eloquent\{closure}(Object(App\Error))
#16 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(735): tap(Object(App\Error), Object(Closure))
#17 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php(1357): Illuminate\Database\Eloquent\Builder->create(Array)
#18 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php(1369): Illuminate\Database\Eloquent\Model->__call('create', Array)
#19 C:\Webserver\Websites\www.somedomain.com\webroot\app\Exceptions\Handler.php(246): Illuminate\Database\Eloquent\Model::__callStatic('create', Array)
#20 C:\Webserver\Websites\www.somedomain.com\webroot\app\Exceptions\Handler.php(217): App\Exceptions\Handler->logErrorAndNotify(Array, Object(Symfony\Component\Debug\Exception\FatalThrowableError))
#21 C:\Webserver\Websites\www.somedomain.com\webroot\app\Exceptions\Handler.php(106): App\Exceptions\Handler->logThenRenderServerException(Object(Illuminate\Http\Request), Object(Symfony\Component\Debug\Exception\FatalThrowableError), 500)
#22 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(326): App\Exceptions\Handler->render(Object(Illuminate\Http\Request), Object(Symfony\Component\Debug\Exception\FatalThrowableError))
#23 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(124): Illuminate\Foundation\Http\Kernel->renderException(Object(Illuminate\Http\Request), Object(Symfony\Component\Debug\Exception\FatalThrowableError))
#24 C:\Webserver\Websites\www.somedomain.com\webroot\public\index.php(53): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#25 {main}

首次发生此错误后，对网站的所有请求都会触发完全相同的错误。

谷歌搜索我发现的所有问题是以下2个解决方案：

运行php artisan config:cache或php artisan config:clear
重新启动网络服务器

可以找到找到这些解决方案的一个示例here

现在重新启动网络服务器工作，但在一小时内我们又遇到了同样的问题。是否有其他重启并且它现在似乎有效，但我想知道是什么导致这种情况以及我们如何防止它？

更多信息：

我们正在使用Redis缓存包括配置在内的所有内容。
使用自定义apache堆栈完成托管。
该网站已经运行了几个月，但有些重启，但从未遇到过这个问题。
今天第一次发生问题时，服务器已经填满了它的内存容量，第二次它发生了15 GB的内存。

任何线索或建议都会非常感激。如果需要更多信息来回答问题，我会在被要求时尝试扩展问题。

更新

所以我们再次出现错误，同一行但不同的错误。我认为构建PDO连接出了问题，然后存储该连接以便在一段时间内再次用于所有未来的请求？

这是新的堆栈跟踪：

[2018-06-25 15:27:38] production.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Undefined class constant 'PDO::ATTR_CASE' in C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php:245
Stack trace:
#0 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connectors\ConnectionFactory.php(183): Illuminate\Database\Connectors\ConnectionFactory->createConnector(Array)
#1 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}()
#2 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(883): call_user_func(Object(Closure))
#3 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(904): Illuminate\Database\Connection->getPdo()
#4 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(392): Illuminate\Database\Connection->getReadPdo()
#5 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(318): Illuminate\Database\Connection->getPdoForSelect(true)
#6 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(640): Illuminate\Database\Connection->Illuminate\Database\{closure}('select * from `...', Array)
#7 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(607): Illuminate\Database\Connection->runQueryCallback('select * from `...', Array, Object(Closure))
#8 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Connection.php(326): Illuminate\Database\Connection->run('select * from `...', Array, Object(Closure))
#9 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php(1710): Illuminate\Database\Connection->select('select * from `...', Array, true)
#10 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php(1695): Illuminate\Database\Query\Builder->runSelect()
#11 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(462): Illuminate\Database\Query\Builder->get(Array)
#12 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(446): Illuminate\Database\Eloquent\Builder->getModels(Array)
#13 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Concerns\BuildsQueries.php(75): Illuminate\Database\Eloquent\Builder->get(Array)
#14 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.php(391): Illuminate\Database\Eloquent\Builder->first(Array)
#15 C:\Webserver\Websites\www.somedomain.com\webroot\app\Http\Controllers\Webshop\HomeController.php(268): Illuminate\Database\Eloquent\Builder->firstOrFail()
#16 [internal function]: App\Http\Controllers\Webshop\HomeController->showArticleDetail('BOSAL-287-273-1...')
#17 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Controller.php(55): call_user_func_array(Array, Array)
#18 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.php(44): Illuminate\Routing\Controller->callAction('showArticleDeta...', Array)
#19 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Route.php(203): Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route), Object(App\Http\Controllers\Webshop\HomeController), 'showArticleDeta...')
#20 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Route.php(160): Illuminate\Routing\Route->runController()
#21 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Router.php(574): Illuminate\Routing\Route->run()
#22 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(30): Illuminate\Routing\Router->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#23 C:\Webserver\Websites\www.somedomain.com\webroot\app\Http\Middleware\Localization.php(43): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#24 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): App\Http\Middleware\Localization->handle(Object(Illuminate\Http\Request), Object(Closure))
#25 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#26 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Middleware\SubstituteBindings.php(41): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#27 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Routing\Middleware\SubstituteBindings->handle(Object(Illuminate\Http\Request), Object(Closure))
#28 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#29 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\VerifyCsrfToken.php(65): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#30 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#31 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#32 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\View\Middleware\ShareErrorsFromSession.php(49): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#33 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#34 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#35 C:\Webserver\Websites\www.somedomain.com\webroot\app\Http\Middleware\ConfigureBugsnap.php(36): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#36 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): App\Http\Middleware\ConfigureBugsnap->handle(Object(Illuminate\Http\Request), Object(Closure))
#37 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#38 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.php(64): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#39 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#40 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#41 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse.php(37): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#42 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle(Object(Illuminate\Http\Request), Object(Closure))
#43 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#44 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\EncryptCookies.php(59): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#45 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Cookie\Middleware\EncryptCookies->handle(Object(Illuminate\Http\Request), Object(Closure))
#46 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#47 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#48 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Router.php(576): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#49 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Router.php(535): Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request))
#50 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Router.php(513): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request))
#51 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(176): Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request))
#52 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(30): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
#53 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\spatie\laravel-robots-middleware\src\RobotsMiddleware.php(14): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#54 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Spatie\RobotsMiddleware\RobotsMiddleware->handle(Object(Illuminate\Http\Request), Object(Closure))
#55 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#56 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php(30): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#57 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))
#58 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#59 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php(30): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#60 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))
#61 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#62 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\ValidatePostSize.php(27): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#63 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Foundation\Http\Middleware\ValidatePostSize->handle(Object(Illuminate\Http\Request), Object(Closure))
#64 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#65 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode.php(46): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#66 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(148): Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))
#67 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#68 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#69 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(151): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#70 C:\Webserver\Websites\www.somedomain.com\webroot\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(116): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
#71 C:\Webserver\Websites\www.somedomain.com\webroot\public\index.php(53): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#72 {main}

错误行再次出现在laravel / framework的ConnectionFactory的第245行。此行是以下函数中的return new MySQLConnector;行：

/**
 * Create a connector instance based on the configuration.
 *
 * @param  array  $config
 * @return \Illuminate\Database\Connectors\ConnectorInterface
 *
 * @throws \InvalidArgumentException
 */
public function createConnector(array $config)
{
    if (! isset($config['driver'])) {
        throw new InvalidArgumentException('A driver must be specified.');
    }

    if ($this->container->bound($key = "db.connector.{$config['driver']}")) {
        return $this->container->make($key);
    }

    switch ($config['driver']) {
        case 'mysql':
            return new MySqlConnector;
        case 'pgsql':
            return new PostgresConnector;
        case 'sqlite':
            return new SQLiteConnector;
        case 'sqlsrv':
            return new SqlServerConnector;
    }

    throw new InvalidArgumentException("Unsupported driver [{$config['driver']}]");
}

类MySqlConnector扩展了类Connector。 Connecter的前几行是：

<?php

namespace Illuminate\Database\Connectors;

use PDO;
use Exception;
use Illuminate\Support\Arr;
use Doctrine\DBAL\Driver\PDOConnection;
use Illuminate\Database\DetectsLostConnections;

class Connector
{
    use DetectsLostConnections;

    /**
     * The default PDO connection options.
     *
     * @var array
     */
    protected $options = [
        PDO::ATTR_CASE => PDO::CASE_NATURAL,
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
        PDO::ATTR_STRINGIFY_FETCHES => false,
        PDO::ATTR_EMULATE_PREPARES => false,
    ];

似乎应该设置PDO :: ATTR_CASE。或者也许还没有设置PDO :: CASE_NATURAL？我并不完全理解究竟发生了什么，但在创建新的MySqlConnecter对象或创建底层连接器时，它会返回未设置的错误。首先我认为它与课堂上的一些功能有关。但是看到Trace在创建时停止意味着错误不能真正来自任何函数。

因此，我认为使用PDO课程会出现问题吗？ Connecter.php在开头也有以下行：＆＃39;使用Doctrine \ DBAL \ Driver \ PDOConnection;＆＃39;这也扩展了PDO。

一旦发生这种情况，每个用户的进一步请求都会给堆栈跟踪带来相同的错误，直到我们重新启动Apache，这根本就不了解。看起来如果PDO文件不可用，可能会发生，但我不确定为什么它会继续发生，以及为什么重启Apache会解决它。

以下是可能有助于解决问题的子问题：

导致出现此错误的原因是什么？
如果上述问题无法轻易解决，我该怎么做才能更好地理解这个问题？它在我们的现场环境中很少出现，所以我们没有机会只是将dd放在任何地方，一步一步地完成它。并且每次只需重新启动Apache就必须达到quickfix。
为什么初始故障后的每个请求都会因同样的错误而失败？

Answer 1

我们最后一次尝试重启MySQL Server以及Apache。（按此顺序）似乎已经解决了这个问题。以防我们那天晚上重启服务器。

这为我们解决了这个问题，但是如果某人有更好的答案，并且知道导致问题的原因，我希望他们分享他们的知识！

编辑：仍然没有修复，似乎是一个临时修复。

Answer 2

到目前为止，这里有三个建议：

确保您的数据库配置正确设置并以这种方式保留（因此，在服务器端读取的变量没有任何变化……不仅是从.env文件中更改）。这可能与缓存和当前数据库设置之间的某种冲突有关。详细查看；
确保您的php版本符合laravel 5.4的要求，因为这种类型的错误很容易由当前php版本中不存在的语法引起，该语法在后台的某个给定位置使用，从后端服务器上获取工作被破坏了；
这也可能与您正在使用的php版本的MySQL PDO驱动程序的可用性有关，因此无法访问有关PDO类内部内容的功能块。这对我来说听起来最合理，因此您可以在此问题上进行更深入的研究。重点关注正在使用的某些PHP和PDO模块周围的设置。

此外，还应考虑服务器端配置错误（例如apache或服务器管理），因为错误的输入可能会传递给基本的laravel层并导致意外的行为。不幸的是，堆栈跟踪和有关错误的信息不足以精确地诊断问题。不过，请让我继续关注，这似乎很有趣。

第245行ConnectionFactory.php中的不同错误 - Laravel 5.4

2 个答案: