Question

此代码从我的数据库中获取所有用户名并将其打印在网页上，但我从此行中收到此错误

echo $row['username'];

有什么不对？

<?php

namespace test\stuffBundle\Controller;


use tuto\testBundle\Entity\Users;

use Symfony\Component\HttpFoundation\Request;

use Symfony\Component\DependencyInjection\ContainerInterface;
use Doctrine\ORM\EntityManager;
use Symfony\Component\DependencyInjection\ContainerInterface as Container;
use Symfony\Component\HttpFoundation\Session\Session;
use Ratchet\WebSocket\WsServerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class DefaultController extends Controller
{
    public function indexAction()
    {       


        $conn = $this->get('database_connection');

        while ($row = $conn->fetchAll('SELECT username FROM user')) {
            echo $row['username'];
        }
        return $this->render('teststuffBundle:Default:index.html.twig');
    }
}

我的实体用户文件

<?php
namespace AppBundle\Entity;

use FOS\UserBundle\Model\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="`user`")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;
     /**
     *@var integer
     *
     * @ORM\Column(name="MatchP",type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $MatchP;
    public function getMatchP()
    {
        return $this->MatchP;
    }

    public function setMatchP($MatchP)
    {
        $this->MatchP = $MatchP;
    }

    public function __construct()
    {
        parent::__construct();
    }
}

我的print_r($row);输出

Array ( [0] => Array ( [username] => shar ) [1] => Array ( [username] => koko ) ) Array ( [0] => Array ( [username] => shar ) [1]

=＆GT;数组（[用户名] =＆gt; koko））

Answer 1

我怀疑这是一个结果集，你需要尝试这样：

$row = $conn->fetchAll('SELECT username FROM user');

foreach( $row as $user){
    echo $user['username'];
}

你能试试看看是否有效。我不确定它会起作用。

symfony注意：未定义索引：用户名

1 个答案: