作曲家自动加载完整示例? [英] Composer autoload full example?

问题描述

我正在尝试放置全部 豌豆 一起我发现了有关自动加载在作曲家上课，但我无法使其正常工作.我看到的每个示例都缺少某些部分.基本上可以归结为4行的两个文件:

I am trying to put all the peaces together I found about autoloading a class in composer but I can't make it work. Every example I see is missing some part. Basically it comes down to two files with 4 lines:

index.php

index.php

$loader = require 'vendor/autoload.php';
$loader->add('Vendor\\', __DIR__.'/../app/');
new Vendor_Package_Obj();

app/Vendor/Package/Obj.php

app/Vendor/Package/Obj.php

class Obj {}

我还尝试了psr-4以及文件夹和名称的所有可想像的组合，以用于`Vendor Package Obj?但没有运气找到可行的解决方案.

I also tried psr-4 and all thinkable combinations of folders and names for `Vendor Package Obj? but no luck finding a working solution.

如何使用任何这些标准通过composer自动加载文件?

How can I autoload a file with composer using any of those standards?

推荐答案

根据 PSR -4 ，完全合格的类名称必须具有顶级名称空间名称，也称为供应商名称空间"，并且下划线在完全合格的类名称的任何部分都没有特殊含义.

According to PSR-4, The fully qualified class name MUST have a top-level namespace name, also known as a "vendor namespace" and underscores have no special meaning in any portion of the fully qualified class name.

尝试一下:

cd ~
mkdir -p testproj/src/MyApp/Package
cd testproj
composer init && composer update

使用以下内容创建index.php:

Create your index.php with this content:

<?php
$loader = require 'vendor/autoload.php';
$loader->add('MyApp\\', __DIR__.'/src/');
$a = new MyApp\Package\Obj();
var_dump($a);

并放入Obj类(src/MyApp/Package/Obj.php):

And put the Obj class (src/MyApp/Package/Obj.php) :

<?php
namespace MyApp\Package;

class Obj
{}

现在，当您运行代码时:

Now when you run the code:

php index.php

您应该将此作为输出:

class MyApp\Package\Obj#2 (0) {
}

目录支架也应如下所示:

Also directory scaffolding should look like this:

testproj
├── composer.json
├── index.php
├── src
│   └── MyApp
│       └── Package
│           └── Obj.php
└── vendor
    ├── autoload.php
    └── composer
        ├── ClassLoader.php
        ├── autoload_classmap.php
        ├── autoload_namespaces.php
        ├── autoload_psr4.php
        └── autoload_real.php

这篇关于作曲家自动加载完整示例?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！