学说2.不能重新声明课程设置

Question

有时我看到页面加载时发生的错误，指向基类初始化Doctrine 2安装程序。

问题在于错误是经常发生的，因此很容易发现因果关系。但是，我确信这个问题已经遇到了某人。并且它可能能够提示响应。

提前致谢。

错误字符串：致命错误：无法在/....hidden路径中重新声明类doctrine \ orm \ tools \ setup .... / lib / DoctrineORM / Doctrine / ORM / Tools / Setup.php在线34

<?php
namespace Doctrine\ORM\Tools;

use Doctrine\Common\ClassLoader;
use Doctrine\Common\Cache\Cache;
use Doctrine\Common\Cache\ArrayCache;
use Doctrine\ORM\Configuration;
use Doctrine\ORM\Mapping\Driver\XmlDriver;
use Doctrine\ORM\Mapping\Driver\YamlDriver;

/**
 * Convenience class for setting up Doctrine from different installations and configurations.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class Setup
{
    /**
     * Use this method to register all autoloaders for a setup where Doctrine is checked out from
     * its github repository at {@link http://github.com/doctrine/doctrine2}
     *
     * @param string $gitCheckoutRootPath
     * @return void
     */
    static public function registerAutoloadGit($gitCheckoutRootPath)
    {
        if (!class_exists('Doctrine\Common\ClassLoader', false)) {
            require_once $gitCheckoutRootPath . "/lib/vendor/doctrine-common/lib/Doctrine/Common/ClassLoader.php";
        }

        $loader = new ClassLoader('Doctrine\Common', $gitCheckoutRootPath . "/lib/vendor/doctrine-common/lib");
        $loader->register();

        $loader = new ClassLoader('Doctrine\DBAL', $gitCheckoutRootPath . "/lib/vendor/doctrine-dbal/lib");
        $loader->register();

        $loader = new ClassLoader('Doctrine\ORM', $gitCheckoutRootPath . "/lib");
        $loader->register();

        $loader = new ClassLoader('Symfony\Component', $gitCheckoutRootPath . "/lib/vendor");
        $loader->register();
    }

    /**
     * Use this method to register all autoloaders for a setup where Doctrine is installed
     * though {@link http://pear.doctrine-project.org}.
     *
     * This method registers autoloaders for both Doctrine and Symfony top
     * level namespaces.
     *
     * @return void
     */
    static public function registerAutoloadPEAR()
    {
        if (!class_exists('Doctrine\Common\ClassLoader', false)) {
            require_once "Doctrine/Common/ClassLoader.php";
        }

        $loader = new ClassLoader("Doctrine");
        $loader->register();

        $loader = new ClassLoader("Symfony");
        $loader->register();

        $classLoader = new ClassLoader('DoctrineExtensions', $lib . 'DoctrineExtensions');
        $classLoader->register();
    }

    /**
     * Use this method to register all autoloads for a downloaded Doctrine library.
     * Pick the directory the library was uncompressed into.
     *
     * @param string $directory
     */
    static public function registerAutoloadDirectory($directory)
    {
        if (!class_exists('Doctrine\Common\ClassLoader', false)) {
            require_once $directory . "/Doctrine/Common/ClassLoader.php";
        }

        $loader = new ClassLoader("Doctrine", $directory);
        $loader->register();

        $loader = new ClassLoader('Symfony\Component', $directory . "/Doctrine");
        $loader->register();

        $classLoader = new ClassLoader('DoctrineExtensions', $directory);
        $classLoader->register();
    }

    /**
     * Create a configuration with an annotation metadata driver.
     *
     * @param array $paths
     * @param boolean $isDevMode
     * @param string $proxyDir
     * @param Cache $cache
     * @param bool $useSimpleAnnotationReader
     * @return Configuration
     */
    static public function createAnnotationMetadataConfiguration(array $paths, $isDevMode = false, $proxyDir = null, Cache $cache = null, $useSimpleAnnotationReader = true)
    {
        $config = self::createConfiguration($isDevMode, $proxyDir, $cache);
        $config->setMetadataDriverImpl($config->newDefaultAnnotationDriver($paths, $useSimpleAnnotationReader));
        return $config;
    }

    /**
     * Create a configuration with a xml metadata driver.
     *
     * @param array $paths
     * @param boolean $isDevMode
     * @param string $proxyDir
     * @param Cache $cache
     * @return Configuration
     */
    static public function createXMLMetadataConfiguration(array $paths, $isDevMode = false, $proxyDir = null, Cache $cache = null)
    {
        $config = self::createConfiguration($isDevMode, $proxyDir, $cache);
        $config->setMetadataDriverImpl(new XmlDriver($paths));
        return $config;
    }

    /**
     * Create a configuration with a yaml metadata driver.
     *
     * @param array $paths
     * @param boolean $isDevMode
     * @param string $proxyDir
     * @param Cache $cache
     * @return Configuration
     */
    static public function createYAMLMetadataConfiguration(array $paths, $isDevMode = false, $proxyDir = null, Cache $cache = null)
    {
        $config = self::createConfiguration($isDevMode, $proxyDir, $cache);
        $config->setMetadataDriverImpl(new YamlDriver($paths));
        return $config;
    }

    /**
     * Create a configuration without a metadata driver.
     *
     * @param bool $isDevMode
     * @param string $proxyDir
     * @param Cache $cache
     * @return Configuration
     */
    static public function createConfiguration($isDevMode = false, $proxyDir = null, Cache $cache = null)
    {
        $proxyDir = $proxyDir ?: sys_get_temp_dir();
        if ($isDevMode === false && $cache === null) {
            if (extension_loaded('apc')) {
                $cache = new \Doctrine\Common\Cache\ApcCache();
            } else if (extension_loaded('xcache')) {
                $cache = new \Doctrine\Common\Cache\XcacheCache();
            } else if (extension_loaded('memcache')) {
                $memcache = new \Memcache();
                $memcache->connect('127.0.0.1');
                $cache = new \Doctrine\Common\Cache\MemcacheCache();
                $cache->setMemcache($memcache);
            } else if (extension_loaded('redis')) {
                $redis = new \Redis();
                $redis->connect('127.0.0.1');
                $cache = new \Doctrine\Common\Cache\RedisCache();
                $cache->setRedis($redis);
            } else {
                $cache = new ArrayCache();
            }
        } else if ($cache === null) {
            $cache = new ArrayCache();
        }
        $cache->setNamespace("dc2_" . md5($proxyDir) . "_"); // to avoid collisions

        $config = new Configuration();
        $config->setMetadataCacheImpl($cache);
        $config->setQueryCacheImpl($cache);
        $config->setResultCacheImpl($cache);
        $config->setProxyDir($proxyDir);
        $config->setProxyNamespace('DoctrineProxies');
        $config->setAutoGenerateProxyClasses($isDevMode);

        return $config;
    }
}

Answer 1

问题是重复的加载实体。