我无法访问Laravel 5中的原始PDO实例 [英] I cannot access the raw PDO instance in Laravel 5

问题描述

我是laravel的新手，我正在尝试访问原始PDO实例，引用此文档DB::connection()->getPdo();到我的控制器，即可访问nofollow> http://laravel.com/docs/5.0/database#accessing-connections .但我收到此错误:

I'm new to laravel and I'm trying to access the raw PDO instance referring to this doc http://laravel.com/docs/5.0/database#accessing-connections by using this code DB::connection()->getPdo(); to my controller. But I'm getting this error:

FatalErrorException in GeneralCategoryController.php line 24:
Class 'App\Http\Controllers\DB' not found

我已经尝试包含此命名空间Illuminate\Support\Facades\DB，但仍然没有结果. 请注意，我已经连接到mysql数据库. 我想念什么吗?

I've already tried to include this namespace Illuminate\Support\Facades\DB but still no result. Please note that I'm connected already to mysql database. Am I missing something?

推荐答案

$pdo = DB::connection()->getPdo();
$query=$pdo->prepare("SHOW TABLES");
$query->execute();//$query->execute(array($bindings ));
while($row=$query->fetch(\PDO::FETCH_BOTH)) {
    //Use \PDO::FETCH_ASSOC, \PDO::FETCH_OBJ    
    //echo $row->yourcolumnname;//its an object when \PDO::FETCH_OBJ
    echo $row[0]; //Indexed Array

}

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