title: APCu and Symfony2
body: <p>Since PHP 5.5 broke APC in favor of their own cache, I'm trying to get my Symfony2 project running with APCu instead, and it doesn't like it:</p>
  <pre><code>$ php app/console cache:clear --env=prod --no-warmup
  PHP Fatal error:  Call to undefined function Doctrine\Common\Cache\apc_fetch() in /home/maf/symfony/vendor/doctrine/cache/lib/Doctrine/Common/Cache/ApcCache.php on line 40
  </code></pre>
  <p>The documentation of APCu is basically non-existent, and the Symfony2 docs are outdated, providing help only for APC.</p>
  <p>I regret using PHP these days with all the compatibility-breaking upgrades, but I need to get my project running again. Where do I apply the gaffer tape?</p>