Configuring Google as an OAuth Provider in PHPKB

Estimated Reading Time: 3 Minutes

How to configure Google as an OAuth provider in PHPKB knowledge base software. In this tutorial, you will learn how to configure Google as OAuth Provider with PHPKB OAuth plugin.

PHP Requirements:

  • PHP 7.0 or later
  • CURL extension
  • JSON extension
  • OpenSSL extension

Download & Installation:

Extract the package (that you received after purchasing this plugin) and copy all the files & folders and paste them at their respective locations under the installation directory of PHPKB Knowledge Management Software on your server. There is a new folder, called ‘add-ons’ (applicable to PHPKB v9.0), copy that and put it directly under the root folder (i.e. outside /admin/ folder) of the PHPKB package.

Step 1: Setup Google as an OAuth Provider

    • Go to and Login / Signup.
    • Click on Select a project, and you will see a popup with a list of all your projects.

    • You can click on the New Project button to create a new project.

    • Enter your Project name under the Project Name field and click on Create

      Create a new project

    • Go to Navigation Menu > APIs > Services > Credentials .


    • Click on Create Credentials button and then select OAuth Client ID from the options provided.

      Create credentials

    • In case you are facing some warning saying that in order to create an OAuth Client ID, you must set a product name on the consent screen. Click on the Configure consent screen button.

      Configure consent

    • Enter your product name under the Product Name Shown to Users field. Click on the SAVE button to save your settings.

      App Registration

    • Now for configuring scopes, click on Add or Remove the Scopes button.

      Add or remove scopes

    • Now, select the Scopes to allow your project to access specific types of private user data from their Google Account and click on Save and Continue button.

    • Go to the Credentials tab and click on Create Credentials button. Select Web Application from the dropdown list to create a new application. 

      Create Credentials & Select Web Application

    • Enter the name you want for your Client ID under the name field and enter the Redirect / Callback URI from PHPKB OAuth / OpenID-Connect plugin under the Redirect URL field.

      Create OAuth Client ID

    • Click on the SAVE button to save your configurations. Now, you have successfully completed your Google App OAuth Server side configurations.

      Client ID Created


      Google Endpoints and Scope:

      Scope openid email
      Authorize Endpoint
      Access Token Endpoint
      Get User Info Endpoint
      Grant Type Authorization Code

Step 2: Setup PHPKB as OAuth Client 

  • Login to Administrator Control Panel as Superuser  and go to Tools > OAuth / OpenID-Connect. 
  • Let’s configure the Basic Configuration.  

    Tip: For easier configuration, there are helpful notes added under the fields/options where it is needed.

  • Now configure the Advanced Settings section. 

    Advanced Settings

  • Then configure the Attribute Mapping section.

    Tip: To create users as Member users, you can set the ’Default Role’ as ’Member’, otherwise, change it accordingly. 

    Attribute Mapping

  • The next is the Role Mapping section where you can map the roles returned by IdP with the roles that are available in PHPKB.

    If your IdP does not return any roles then you can skip this section.

    Role Mapping

  • Then you can set Role Precedence for different roles.

    If your IdP does not return any roles then you can skip this section.

    Role Precedence

  • Finally, set up Security Settings accordingly (if needed).

  • Test the configuration by going to the Login page (either in the Public area or Admin area).

  That’s all!

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Configuring Google as an OAuth Provider in PHPKB