Authenticating Issues in PHP

[Ethan Lyon]

Hi There,

I'm having an issue authenticating the Adwords API on my webserver. I've been at it for hours, troubleshooting with Google and youtube tutorials and thought I would ask for some help.

1. I uploaded the files here: https://github.com/googleads/googleads-php-lib to a folder on my server (e.g. http//dev.example.com/folder/)
   
2. Created an MCC account, thus receiving a dev token, pending (followed this tutorial on creating a test account)
   
3. Created a test MCC account and registered a web application on https://console.developers.google.com/ (Apis & Auth -> Credentials -> Create New Client ID -> assigned Redirect URIs to e.g. http//dev.example.com/)
4. Went to this folder: "/googleads-php-lib-5.7.1/src/Google/Api/Ads/AdWords/auth.ini" from this tutorial: https://www.youtube.com/watch?v=Idvia4600_E (NOTE: missing OAuth 2.0)
5. Here is the code:
6. ; Detailed descriptions of these properties can be found at:
   ; https://developers.google.com/adwords/api/docs/headers
   
   
   developerToken = "PRODUCTION MCC ACCOUNT API DEVELOPER TOKEN (PENDING)"
   userAgent = "MY NAME"
   
   
   ; Uncomment clientCustomerId to make requests against a single AdWords account,
   ; such as when you run the examples.
   ; If you don't set it here, you can set the client customer ID dynamically:
   ;  $user = new AdWordsUser();
   ;  $user->SetClientCustomerId(...);
   
   
   ; clientCustomerId = "CUSTOMER ID FROM MY TEST MCC ACCOUNT"
   
   
   [OAUTH2]
   
   
   ; If you do not have a client ID or secret, please create one of type
   ; "installed application" in the Google API console:
   ; https://cloud.google.com/console
   client_id = "USED CLIENT ID FROM TEST MCC CONSOLE PROJECT"
   client_secret = "USED CLIENT SECRET FROM TEST MCC CONSOLE PROJECT"
   
   
   ; If you already have a refresh token, enter it below. Otherwise run
   ; GetRefreshToken.php.
   refresh_token = "USED WHATEVER CAME AFTER 'CODE=' IN THE DESTINATION URL, FOLLOWING THESE INSTRUCTIONS: https://developers.google.com/accounts/docs/OAuth2WebServer"
   
7. I'm trying to get keyword search volume data so I ran this code: /googleads-php-lib-5.7.1/examples/AdWords/v201409/Optimization/EstimateKeywordTraffic.php and /googleads-php-lib-5.7.1/examples/AdWords/v201409/Optimization/GetKeywordIdeas.php but only found a blank page. 

Is it an Auth issue? Am I doing something wrong?

Any help would be much appreciated.

Thanks!