Full ACL example

--- application/models/Acl.php ---
<?php
class Application_Model_Acl extends Zend_Acl
{
    public function __construct()
    {
        $this->addRole('reader');
        $this->addRole('editor', 'reader');
        $this->addRole('copywriter', 'editor');

        $this->addResource('stories');
        $this->addResource('edit-stories');
        $this->addResource('publish-stories');

        $this->allow('reader', 'stories', 'read');
        $this->allow('editor', 'edit-stories', array ('create','update'));
        $this->allow('copywriter', 'publish-stories', array ('publish'));
    }
}

--- application/controllers/TestController.php ---
public function aclAction()
{
    $acl = new Application_Model_Acl();
    $this->view->acl = $acl;
}

--- application/views/scripts/test/acl.phtml ---
<?php echo $this->htmlList(array (
    'reader is allowed to read stories: ' . ($this->acl->isAllowed('reader', 'stories', 'read') ? 'true' : 'false'),
    'reader is allowed to edit stories: ' . ($this->acl->isAllowed('reader', 'stories', 'edit') ? 'true' : 'false'),
    'reader is allowed to create stories: ' . ($this->acl->isAllowed('reader', 'stories', 'create') ? 'true' : 'false'),
    'reader is allowed to publish stories: ' . ($this->acl->isAllowed('reader', 'stories', 'publish') ? 'true' : 'false'),

    'editor is allowed to read stories: ' . ($this->acl->isAllowed('editor', 'stories', 'read') ? 'true' : 'false'),
    'editor is allowed to edit stories: ' . ($this->acl->isAllowed('editor', 'stories', 'edit') ? 'true' : 'false'),
    'editor is allowed to create stories: ' . ($this->acl->isAllowed('editor', 'stories', 'create') ? 'true' : 'false'),
    'editor is allowed to publish stories: ' . ($this->acl->isAllowed('editor', 'stories', 'publish') ? 'true' : 'false'),

    'copywriter is allowed to read stories: ' . ($this->acl->isAllowed('copywriter', 'stories', 'read') ? 'true' : 'false'),
    'copywriter is allowed to edit stories: ' . ($this->acl->isAllowed('copywriter', 'stories', 'edit') ? 'true' : 'false'),
    'copywriter is allowed to create stories: ' . ($this->acl->isAllowed('copywriter', 'stories', 'create') ? 'true' : 'false'),
    'copywriter is allowed to publish stories: ' . ($this->acl->isAllowed('copywriter', 'stories', 'publish') ? 'true' : 'false'),

))?>