ZF2 doctrineORM实体需要两次

Question

Got a zf2 skeleton app, with DoctrineORM with some entities, and all works fine.

Now when i try to add a "Category" entity:

namespace Me\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="me_category")
 */
class Category
{
    /**
     * @var int
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;


    /**
     * @var string
     * @ORM\Column(type="string", length=255, unique=true)
     */
    protected $name;

    public function getId()
    {
        return $this->id;
    }

    public function setId($id)
    {
        $this->id = (int)$id;
    }
    public function getName()
    {
        return $this->name;
    }
    public function setName($name)
    {
        $this->name = (string) $name;
    }
}

but that gives me the following error:

Fatal error: require_once(): Cannot redeclare class me\entity\category in App/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/Driver/AnnotationDriver.php on line 197

I figured this was because the Category.php gets required twice. So i got a temporary fix by adding a "guard" in the Category.php

 if (defined('CATEGORY_GUARD')) return;
define('CATEGORY_GUARD', true);

This works but of course is not how it's supposed to be done. Anybody who has any idea why this entity gets required twice?

• i have not used the Category entity anywhere
• the first time it is required as: category.php (normal c) the second time as Category.php (capital C)