致命错误:找不到类'Pheanstalk \ Pheanstalk` [英] Fatal Error: Class 'Pheanstalk\Pheanstalk` not found

问题描述

我正在使用我通过作曲家下载的名为Pheanstalk的库.我正在运行以下脚本:

I am using a library that I downloaded with composer called Pheanstalk. I am running the following script:

<?php

//... some unrelated code

require_once('vendor/autoload.php');        //loading the autoload file from composer
use Pheanstalk\Pheanstalk;                  //using the namespace
$pheanstalk = new Pheanstalk('127.0.0.1');  //initiating an object

//... some unrelated code

?>

出现以下错误:

Fatal Error: Class 'Pheanstalk\Pheanstalk' not found in /opt/lampp/htdocs/project_zero/index.php on line 16

第16行为: $ pheanstalk = new Pheanstalk('127.0.0.1');

问题:为什么我会出现此错误?上面的脚本基本上是从Pheanstalk github页面上给出的用法示例复制粘贴的: https://github.com/pda/pheanstalk .

Question: Why might I be getting this error? The script above was basically copy-paisted from the Usage Example given on the Pheanstalk github page: https://github.com/pda/pheanstalk.

我的 composer.json 文件的内容为:

{
  "require": {
    "pda/pheanstalk": "2.1.1"
  }
}

---

已

使用时出现新错误:

use \Pheanstalk_Pheanstalk

错误:

Warning: The use statement with non-compound name 'Pheanstalk_Pheanstalk' has no effect in /opt/lampp/htdocs/project_zero/index.php on line 14

Fatal error: Class 'Pheanstalk' not found in /opt/lampp/htdocs/project_zero/index.php on line 17

推荐答案

根据您的 composer.json ，您使用的是2.1.1版:

According to your composer.json, you are using version 2.1.1: https://github.com/pda/pheanstalk/blob/2.1/classes/Pheanstalk/Pheanstalk.php

类名称为 Pheanstalk_Pheanstalk 而不是 Pheanstalk \ Pheanstalk :目前不符合PSR-4.

The class name is Pheanstalk_Pheanstalk not Pheanstalk\Pheanstalk: it was not PSR-4 compliant at this moment.

所以您应该使用:

<?php
use \Pheanstalk_Pheanstalk;

当您在命名空间文件中时.如果您不在文件中使用名称空间，则无需导入"该类.

when you're in a namespaced file. If you don't use namespace in a file, you don't need to "import" the class.

如果使用命名空间，则反斜杠非常重要，因为版本2.x中的类未命名空间.

Backslash is important if you use namespaces, because the class, in version 2.x was not namespaced.

更新

所以您的代码应如下所示:

So your code should be like this:

<?php

//... some unrelated code

require_once('vendor/autoload.php');        //loading the autoload file from composer
$pheanstalk = new Pheanstalk_Pheanstalk('127.0.0.1');  //initiating an object

//... some unrelated code

?>

仅此而已.

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