PHP致命錯誤：調用未定義的功能，比採用ContainerAwareInterface

Question

當Symfony的2.8裝入燈具，我收到以下錯誤裝燈具時，我實現ContainerAwareInterface：

PHP Fatal error: Call to undefined function MeetingBundle\DataFixtures\ORM\User() 

如果我不使用這個接口，這個錯誤不會出現。我拿出官方Symfony documentation的示例代碼。

文件：

<?php 

namespace MeetingBundle\DataFixtures\ORM; 

use Doctrine\Common\DataFixtures\FixtureInterface; 
use Doctrine\Common\Persistence\ObjectManager; 
use Doctrine\Common\DataFixtures\AbstractFixture; 
use Doctrine\Common\DataFixtures\OrderedFixtureInterface; 
use Symfony\Component\DependencyInjection\ContainerAwareInterface; 
use Symfony\Component\DependencyInjection\ContainerInterface; 
use MeetingBundle\Entity\User; 

//C:\Bitnami\wampstack-5.6.20-0\apache2\htdocs\sym_prog\just2\src\MeetingBundle\DataFixtures\ORM\LoadUsers01Loader.php 


/* 
    Class LoadUsers01 
@package Meeting\DataFixtures\ORM 
*/ 
class LoadUsers01Loader extends AbstractFixture implements OrderedFixtureInterface, ContainerAwareInterface { 

    /** 
    * @var ContainerInterface 
    */ 
    private $container; 


    public function setContainer(ContainerInterface $container = null) 
    { 
     $this->container = $container; 
    } 


    /* 
     {@inheritDoc} 
    */ 
    public function load(ObjectManager $manager) 
    { 
     for ($i = 1; $i <= 10; $i++) { 
      $fuser = new User(); 
      $fuser->setUsername('name'.$i); 
      $fuser->setEmail('g.statkute'.$i.'@gmail.com'); 
      $fuser->setIsActive(1); //also tried to use true 
       $encoder = $this->container->get('security.password_encoder'); 
       $encodedPsswd = $encoder->encodePassword($user, 'pswd'.$i); 
      //$fuser->setPassword('pswd'.$i); 
      $fuser->setPassword($encodedPsswd); 
      $manager->persist($fuser); 
      $this->addReference('fuser:name'.$i, $fuser); 
     } 

     $manager->flush(); 
    } 

     public function getOrder() 
    { 
     return 1; 
    } 
} 

完整的錯誤：

c:\Bitnami\wampstack-5.6.20-0\apache2\htdocs\sym_prog\just2>php app/console doctrine:fixtures:load 
Careful, database will be purged. Do you want to continue y/N ?y 
    > purging database 
    > loading [1] MeetingBundle\DataFixtures\ORM\LoadUsers01 
PHP Fatal error: Call to undefined function MeetingBundle\DataFixtures\ORM\User() in C:\Bitnami\wampstack-5.6.20-0\apache2\htdocs\sym_prog\just2\src\MeetingBundle\DataFixtures\ORM\LoadUsers01.php on line 40 

我不知道該怎麼ContainerAwareInterface可能會導致這個錯誤？如果我沒有實現它並使用不帶編碼器的普通密碼，那麼這些燈具會加載到數據庫中。

其實，忽略這個錯誤，並進一步工作，我開始得到其他命名空間錯誤。例如，symfony嘗試從命名空間「MeetingBundle \ Entity \ Doctrine \ Common \ Collections」加載類「ArrayCollection」。命名空間有問題。解決這個問題嗎？

src\MeetingBundle\Entity\User.php 
namespace MeetingBundle\Entity; 
use Doctrine\Common\Collections\ArrayCollection; 
/** 
* User 
* 
* @ORM\Table(name="tuser") 
* @ORM\Entity(repositoryClass="MeetingBundle\Repository\UserRepository") 
*/ 
class User implements AdvancedUserInterface, EquatableInterface, \Serializable 

<...> 
    /** 
    * @ORM\ManyToMany(targetEntity="Role", inversedBy="users") 
    * 
    */ 
    private $roles; 

public function __construct() { 
$this->roles = new Doctrine\Common\Collections\ArrayCollection(); 
<...> 

創建用戶時給我一個錯誤：

Attempted to load class "ArrayCollection" from namespace "MeetingBundle\Entity\Doctrine\Common\Collections". 
Did you forget a "use" statement for "Doctrine\Common\Collections\ArrayCollection"? 

Answer 1

此：

 $fuser = User(); 

和

use MeetingBundle\Entity\User; 

有一個在沒有User功能10名稱空間。它可能在MeetingBundle\Entity\User，所以你可能想要

$fuser = MeetingBundle\Entity\User\User(); 

改爲。

Answer 2

首先，你忘記了new運算符User()之前，因此PHP將它視爲一個函數調用。

改變這一行：

$fuser = User(); 

到：

$fuser = new User(); 

而且你使用不符合存在$user變量：

$encodedPsswd = $encoder->encodePassword($user, 'pswd'.$i); 

你應該改變它使用$fuser：

$encodedPsswd = $encoder->encodePassword($fuser, 'pswd'.$i);