正在加载第三方库：未找到

Question

I am trying to include a third party library into my Symfony 2 project as explained here. However, I keep getting the error message Fatal error: Class 'Sprain_Images' not found in /src/MyProject/MyBundle/Controller/BackendController.php on line 267.

Here is what I did:

I put a third party class into the src folder (not directly in vendors because this class is not available to be loaded by deps).

#Directory structure
-src
  -MyProject
  -vendor
     -sprain
       -lib
         -Images
           -src
           Images.php

Then I created the class to be used:

 # /src/vendor/sprain/lib/Images/Images.php
 require_once __DIR__.'/src/class.Images.php';
 class Sprain_Images extends Images {
 }

I also registered the prefix in autoload.php:

# /app/autoload.php
$loader->registerPrefixes(array(
  'Twig_Extensions_' => __DIR__.'/../vendor/twig-extensions/lib',
  'Twig_'            => __DIR__.'/../vendor/twig/lib',
  'Sprain_'          => __DIR__.'/../src/vendor/sprain/lib',
));

And eventually I called the class in my controller:

# /src/MyProject/MyBundle/Controller/BackendController.php
$image = new \Sprain_Images();

However the class is not being found. Where did I make the mistake?

Answer 1

The class Sprain_Images should be in src/vendor/sprain/lib/Sprain/Images.php.

You can read more about the PSR-0 standard : https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md#underscores-in-namespaces-and-class-names