php - 无法调用使用 Composer 安装的类

Question

我已经使用 Composer 安装了一个 PHP 包装器库。自动加载器似乎工作正常，但我不能像它说的那样调用类

class 'Diffbot' not found.

我已经尝试了很多技巧，尤其是 Composer 文档中提到的技巧，但我无法让它工作，我想我必须在这里分享我的问题。

我的 composer.json 包含以下几行

{
    "require": {
        "swader/diffbot-php-client": "^0.4.4"
    }

}

Directory structure

Vendor
---composer
---guzzlehttp
---react
---swader
---autoload.php

'swader' folder
---diffbot-php-client
    ---src
        ---Abstracts
        ---Api
        ---Entity
        ---Exceptions
        ---Factory
        ---Interfaces
        ---Traits
        ---Diffbot.php

我正在尝试调用 Diffbot.php 下的 Diffbot 类，它包含以下命名空间:

namespace Swader\Diffbot;

use Swader\Diffbot\Api\Crawl;
use Swader\Diffbot\Api\Custom;
use Swader\Diffbot\Api\Search;
use Swader\Diffbot\Exceptions\DiffbotException;
use Swader\Diffbot\Api\Product;
use Swader\Diffbot\Api\Image;
use Swader\Diffbot\Api\Analyze;
use Swader\Diffbot\Api\Article;
use Swader\Diffbot\Api\Discussion;
use GuzzleHttp\Client;
use Swader\Diffbot\Factory\Entity;
use Swader\Diffbot\Interfaces\Api;
use Swader\Diffbot\Interfaces\EntityFactory;

/**
 * Class Diffbot
 *
 * The main class for API consumption
 *
 * @package Swader\Diffbot
 */
class Diffbot
{
    /** @var string The API access token */
    protected static $token = null;

composer/文件夹下的autoload_psr4.php文件:

// autoload_psr4.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'Swader\\Diffbot\\' => array($vendorDir . '/swader/diffbot-php-client/src'),
    'React\\Promise\\' => array($vendorDir . '/react/promise/src'),
    'GuzzleHttp\\Stream\\' => array($vendorDir . '/guzzlehttp/streams/src'),
    'GuzzleHttp\\Ring\\' => array($vendorDir . '/guzzlehttp/ringphp/src'),
    'GuzzleHttp\\' => array($vendorDir . '/guzzlehttp/guzzle/src'),
);

我正在尝试通过以下方式从与 vendor/ 文件夹位于同一目录中的 php 脚本调用 Diffbot 类:

require_once ('vendor/autoload.php');
error_reporting(E_ALL); 
$diffbot = new Diffbot();

编辑

我解决了我的问题。我刚刚添加了以下几行。我对 PHP 命名空间感到困惑。

require_once __DIR__.'/vendor/autoload.php';
$foo = new \Swader\Diffbot\Diffbot('foo');

Answer 1

尝试

require_once __DIR__.'/vendor/autoload.php';
use Swader\Diffbot\Diffbot;
$diffbot = new Diffbot();

参见 PHP doc for reference .