title: Regenerate autoload.php in symfony2
body: <p>I have autoload.php with this code</p>
  
  <pre><code>&lt;?php
  
  // autoload.php generated by Composer
  
  require_once __DIR__ . '/composer' . '/autoload_real.php';
  
  return ComposerAutoloaderInit8be239f5caef32db03f87bb271ed6012::getLoader();
  </code></pre>
  
  <p>but when I access to localhost</p>
  
  <pre><code>Fatal error: Class 'ComposerAutoloaderInit8be239f5caef32db03f87bb271ed6012' not found in /home/sebastian/Development/PHP/miciudad/vendor/autoload.php on line 10
  </code></pre>
  
  <p>Yesterday this work and I didn update.</p>
  
  <p>If I run <code>php composer.phar install</code> will it work and generate the correct  autoload.php?</p>
  
  <p>Thanks!</p>