autoload.php

<?php

// システム要件チェック
if (version_compare(PHP_VERSION, '5.3.3') < 0) {
    die('Your PHP installation is too old. EC-CUBE requires at least PHP 5.3.3. See the <a href="http://www.ec-cube.net/product/system.php">system requirements</a> page for more information.');
}

$autoload = __DIR__.'/vendor/autoload.php';

if (file_exists($autoload) && is_readable($autoload)) {
    $loader = require $autoload;
} else {
    die('Composer is not installed.');
}

// APC autoloader cache
if (extension_loaded('apc') && ini_get('apc.enabled')) {
    $apcLoader = new Symfony\Component\ClassLoader\ApcClassLoader('autoloader.', $loader);
    $apcLoader->register();
    $loader->unregister();
}

return $loader;