请看看：
https://github.com/phpbb/phpbb/blob/3.1.x/phpBB/config/auth.yml(容器对PHPBB3认证提供程序的定义)

版主在
https://github.com/phpbb/phpbb/blob/master/phpBB/config/default/container/services_auth.yml

和

https://github.com/phpbb/phpbb/blob/3.1.x/phpBB/phpbb/auth/provider/provider_interface.php(如下图所示)

<?PHP
/**
*
* This file is part of the PHPBB Forum Software package.
*
* @copyright (c) PHPBB Limited <https://www.PHPbb.com>
* @license GNU General Public License,version 2 (GPL-2.0)
*
* For full copyright and license information,please see
* the docs/CREDITS.txt file.
*
*/
namespace PHPbb\auth\provider;
/**
* The interface authentication provider classes have to implement.
*/
interface provider_interface
{
    /**
     * Checks whether the user is currently identified to the authentication
     * provider.
     * Called in acp_board while setting authentication plugins.
     * Changing to an authentication provider will not be permitted in acp_board
     * if there is an error.
     *
     * @return  boolean|string  False if the user is identified,otherwise an
     *                          error message,or null if not implemented.
     */
    public function init();
    /**
     * Performs login.
     *
     * @param   string  $username   The name of the user being authenticated.
     * @param   string  $password   The password of the user.
     * @return  array   An associative array of the format:
     *                      array(
     *                          'status' => status constant
     *                          'error_msg' => string
     *                          'user_row' => array
     *                      )
     *                  A fourth key of the array may be present:
     *                  'redirect_data' This key is only used when 'status' is
     *                  equal to LOGIN_SUCCESS_LINK_PROFILE and its value is an
     *                  associative array that is turned into GET variables on
     *                  the redirect url.
     */
    public function login($username,$password);
    /**
     * Autologin function
     *
     * @return  array|null  containing the user row,empty if no auto login
     *                      should take place,or null if not impletmented.
     */
    public function autologin();
    /**
     * This function is used to output any required fields in the authentication
     * admin panel. It also defines any required configuration table fields.
     *
     * @return  array|null  Returns null if not implemented or an array of the
     *                      configuration fields of the provider.
     */
    public function acp();
    /**
     * This function updates the template with variables related to the acp
     * options with whatever configuraton values are passed to it as an array.
     * It then returns the name of the acp file related to this authentication
     * provider.
     * @param   array   $new_config Contains the new configuration values that
     *                              have been set in acp_board.
     * @return  array|null      Returns null if not implemented or an array with
     *                          the template file name and an array of the vars
     *                          that the template needs that must conform to the
     *                          following example:
     *                          array(
     *                              'TEMPLATE_FILE' => string,*                              'TEMPLATE_VARS' => array(...),*                          )
     *                          An optional third element may be added to this
     *                          array: 'BLOCK_VAR_NAME'. If this is present,*                          then its value should be a string that is used
     *                          to designate the name of the loop used in the
     *                          ACP template file. When this is present,an
     *                          additional key named 'BLOCK_VARS' is required.
     *                          This must be an array containing at least one
     *                          array of variables that will be assigned during
     *                          the loop in the template. An example of this is
     *                          presented below:
     *                          array(
     *                              'BLOCK_VAR_NAME'    => string,*                              'BLOCK_VARS'        => array(
     *                                  'KEY IS UNIMPORTANT' => array(...),*                              ),*                              'TEMPLATE_FILE' => string,*                          )
     */
    public function get_acp_template($new_config);
    /**
    * Returns an array of data necessary to build custom elements on the login
    * form.
    *
    * @return   array|null  If this function is not implemented on an auth
    *                       provider then it returns null. If it is implemented
    *                       it will return an array of up to four elements of
    *                       which only 'TEMPLATE_FILE'. If 'BLOCK_VAR_NAME' is
    *                       present then 'BLOCK_VARS' must also be present in
    *                       the array. The fourth element 'VARS' is also
    *                       optional. The array,with all four elements present
    *                       looks like the following:
    *                       array(
    *                           'TEMPLATE_FILE'     => string,*                           'BLOCK_VAR_NAME'    => string,*                           'BLOCK_VARS'        => array(...),*                           'VARS'              => array(...),*                       )
    */
    public function get_login_data();
    /**
     * Performs additional actions during logout.
     *
     * @param   array   $data           An array corresponding to
     *                                  \PHPbb\session::data
     * @param   boolean $new_session    True for a new session,false for no new
     *                                  session.
     */
    public function logout($data,$new_session);
    /**
     * The session validation function checks whether the user is still logged
     * into PHPBB.
     *
     * @param   array   $user
     * @return  boolean true if the given user is authenticated,false if the
     *                  session should be closed,or null if not implemented.
     */
    public function validate_session($user);
    /**
    * Checks to see if $login_link_data contains all information except for the
    * user_id of an account needed to successfully link an external account to
    * a forum account.
    *
    * @param    array   $login_link_data    Any data needed to link a PHPBB account to
    *                               an external account.
    * @return   string|null Returns a string with a language constant if there
    *                       is data missing or null if there is no error.
    */
    public function login_link_has_necessary_data($login_link_data);
    /**
    * Links an external account to a PHPBB account.
    *
    * @param    array   $link_data  Any data needed to link a PHPBB account to
    *                               an external account.
    */
    public function link_account(array $link_data);
    /**
    * Returns an array of data necessary to build the ucp_auth_link page
    *
    * @param int $user_id User ID for whom the data should be retrieved.
    *                       defaults to 0,which is not a valid ID. The method
    *                       should fall back to the current user's ID in this
    *                       case.
    * @return   array|null  If this function is not implemented on an auth
    *                       provider then it returns null. If it is implemented
    *                       it will return an array of up to four elements of
    *                       which only 'TEMPLATE_FILE'. If 'BLOCK_VAR_NAME' is
    *                       present then 'BLOCK_VARS' must also be present in
    *                       the array. The fourth element 'VARS' is also
    *                       optional. The array,*                       )
    */
    public function get_auth_link_data($user_id = 0);
    /**
    * Unlinks an external account from a PHPBB account.
    *
    * @param    array   $link_data  Any data needed to unlink a PHPBB account
    *                               from a PHPbb account.
    */
    public function unlink_account(array $link_data);
}

您可以实现为您的Zend框架项目创建提供程序的界面.

创建会话后,可以看到提供者如何使用

https://github.com/phpbb/phpbb/blob/master/phpBB/phpbb/session.php#L560

/* @var $provider_collection \PHPbb\auth\provider_collection */
    $provider_collection = $PHPbb_container->get('auth.provider_collection');
    $provider = $provider_collection->get_provider();
    $this->data = $provider->autologin();

确保两个项目都使用相同的Cookie,或者zend也在设置用户登录时的PHPBB Cookie和会话,session_start使用它来查找会话ID：

if ($request->is_set($config['cookie_name'] . '_sid',\PHPbb\request\request_interface::COOKIE) || $request->is_set($config['cookie_name'] . '_u',\PHPbb\request\request_interface::COOKIE))
    {
        $this->cookie_data['u'] = request_var($config['cookie_name'] . '_u',false,true);
        $this->cookie_data['k'] = request_var($config['cookie_name'] . '_k','',true);
        $this->session_id       = request_var($config['cookie_name'] . '_sid',true);

        $SID = (defined('NEED_SID')) ? '?sid=' . $this->session_id : '?sid=';
        $_SID = (defined('NEED_SID')) ? $this->session_id : '';

        if (empty($this->session_id))
        {
            $this->session_id = $_SID = request_var('sid','');
            $SID = '?sid=' . $this->session_id;
            $this->cookie_data = array('u' => 0,'k' => '');
        }
    }
    else
    {
        $this->session_id = $_SID = request_var('sid','');
        $SID = '?sid=' . $this->session_id;
    }

谢谢.