init_autoloader.php

<?php
/**
 * Zend Server Tool (https://github.com/kevinpapst/zendservertool)
 *
 * @link      https://github.com/kevinpapst/zendservertool
 * @copyright Copyright (c) 2012 Kevin Papst (http://www.kevinpapst.de)
 * @license   https://github.com/kevinpapst/zendservertool/blob/master/LICENSE.txt New BSD License
 */

// Composer autoloading
if (file_exists('vendor/autoload.php')) {
    $loader = include 'vendor/autoload.php';
}

$zf2Path = false;

if (getenv('ZF2_PATH')) {
    $zf2Path = getenv('ZF2_PATH');
} elseif (get_cfg_var('zf2_path')) {
    $zf2Path = get_cfg_var('zf2_path');
} elseif (is_dir('vendor/zendframework/zendframework/library')) {
    $zf2Path = 'vendor/zendframework/zendframework/library';
}

if ($zf2Path) {
    if (isset($loader)) {
        $loader->add('Zend', $zf2Path);
    } else {
        include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
        Zend\Loader\AutoloaderFactory::factory(array(
            'Zend\Loader\StandardAutoloader' => array(
                'autoregister_zf' => true
            )
        ));
    }
}

if (!class_exists('Zend\Loader\AutoloaderFactory')) {
    throw new RuntimeException('Unable to load ZF2. Run `php composer.phar install` or define a ZF2_PATH environment variable.');
}