zend framework 1 acl using json config file

acl.json

{
    "resources": [
        "error::error",
        "auth::login",
        "auth::logout",
        "index::index",
        "video::index"
    ],
    "acl": {
        "guest": [
            "error::error",
            "auth::login"
        ],
        "user": [
            "index::index",
            "video::index",
            "auth::logout"
        ],
        "super": [],
        "admin": []
    }
}

bootstrap.php

/**
 * create the ACL and Auth objects
 * get ACL list from /application/config/acl.json
 * uses lifetime_very_long memcache in production env (not shown here)
 * @link http://www.ens.ro/2012/03/20/zend-authentication-and-authorization-tutorial-with-zend_auth-and-zend_acl/
 */
protected function _initAclAuth()
{
    $zend_acl = new Zend_Acl();        //add the roles
    $zend_acl->addRole(new Zend_Acl_Role('guest'));
    $zend_acl->addRole(new Zend_Acl_Role('user'), array('guest')); //inherits from guest
    $zend_acl->addRole(new Zend_Acl_Role('super'), array('user')); //inherits from user
    $zend_acl->addRole(new Zend_Acl_Role('administrator'), array('super')); //inherits from super

    $zend_acl->allow('administrator'); //by default allow admin access to eveything all resources and all priviledges - mega overlord
    try {
        $acl_config = new \Zend_Config_Json(APPLICATION_PATH . '/application/config/acl.json');

        foreach ($acl_config->resources as $resource) {
            $zend_acl->addResource(new Zend_Acl_Resource($resource));
        }
        foreach ($acl_config->acl as $user => $resources) {
            $resource_array = $resources->toArray();
            foreach ($resource_array as $resource) {
                $zend_acl->allow($user, $resource);
            }
        }
    } catch (\Buto\Exception\Exception $e) {
        vd($e);
    }
    //save to registry
    self::$registry->acl = $zend_acl;
}