找不到类Firebase \ JWT \ JWT [英] Class Firebase\JWT\JWT not found

问题描述

我想在我的代码中使用纯 firebase/php-jwt 库.首先，我进入/var/www/html/，就像官方图书馆页面建议的那样，我这样做

I want to use pure firebase/php-jwt library in my code. Firstly, I go to /var/www/html/ and like the official library page is suggesting, I do this

composer require firebase/php-jwt

运行此命令后，我看到在/var/www/html/中创建了一个新的供应商文件夹，其中包含许多文件和子文件夹.然后，我在/var/www/html/中创建我的token.php文件，其内容与官方页面中的内容相似:

After I run this command, I see that a new vendor folder is created inside /var/www/html/ with a lot of files and subfolders. I then create my token.php file right in /var/www/html/ with contents similar to that from the official page:

<?php
use \Firebase\JWT\JWT;

$key = "example_key";
$token = array(
    "iss" => "http://example.org",
    "aud" => "http://example.com",
    "iat" => 1356999524,
    "nbf" => 1357000000
);

$jwt = JWT::encode($token, $key);
$decoded = JWT::decode($jwt, $key, array('HS256'));

print_r($decoded);

但是，当我进入 localhost/token.php 时，出现以下错误消息:

However, when I go to localhost/token.php, I get this error message:

致命错误:未捕获错误:在/var/www/html/token.php:12中找不到类'Firebase \ JWT \ JWT':堆栈跟踪:#0 {main}抛出在/var/www/html/token中.php在第12行

Fatal error: Uncaught Error: Class 'Firebase\JWT\JWT' not found in /var/www/html/token.php:12 Stack trace: #0 {main} thrown in /var/www/html/token.php on line 12

我不确定这是否重要，但是我的PHP版本是7.0.

I'm not sure if it matters, but my PHP version is 7.0.

推荐答案

按照文档，则需要包含自动加载器.

As per the documentation, you need to include the autoloader.

例如，在您的php文件中:

E.g., in your php file:

require __DIR__ . '/vendor/autoload.php';

但是...通常，您的vendor文件夹将与html文件夹(您在其中提供内容的文件夹)处于同一级别.

But... typically your vendor folder would be at the same level than your html folder (the one where you are serving content).

例如:

- Project root
--- vendor
--- html
----- index.php

然后在index.php中执行以下操作:

Then in your index.php you'd do:

 require __DIR__ . '../vendor/autoload.php';

您尝试使用作曲器和模块很高兴，但是如果您是我，我将尝试阅读有关php的

It is nice that you trying to use composer and modules, but if I were you I'd try to read on a bit about php's autoloading features, so you understand what's going on, and how you can profit from them.

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