Problem with access token while creating Facebook Test Users - php

Question

I'm trying to create test users for my Facebook application. They announced this functionality in this blog post in November (http://developers.facebook.com/blog/post/429) and it is documented here (http://developers.facebook.com/docs/test_users/). I could not find the answer to this elsewhere...
According to the documentation, "You can create a test user associated with a particular application using the Graph API with the application access token." This links to the section "Autenticating as an Application" and describes this CURL script:
curl -F grant_type=client_credentials \
-F client_id=your_app_id \
-F client_secret=your_app_secret \
https://graph.facebook.com/oauth/access_token
So far, so good. I ran this and get the following:
access_token=1182...18|nTI...r5Q
So now I want to POST this token to the graph api test user URL:
POST /1182...18/accounts/test-users?installed=true&permissions=read_stream&access_token=1182...18|nTI...r5Q
When I do this (both using the Facebook PHP SDK and just typing it into the browser) I get:
{
"error": {
"type": "OAuthException",
"message": "Invalid OAuth access token."
}
}
So the questions are:
Why am I getting this error message?
Am I using the wrong access token (despite Facebook explicitly telling me to use this one?)
Do I need to parse the access token somehow?
Thank you for your help.

Answer 1

Here is some working code that will allow you to create a test user with the PHP SDK.

Answer 2

Ensure your access token is properly urlencoded when passing back to facebook.

Answer 3

I was getting this error until I removed some parameters from example code I saw floating around. Here is an example in python using requests that I finally managed to get working:
# Get the access token
resp = requests.get(
'https://graph.facebook.com/oauth/access_token?grant_type=client_credentials&client_id={app_id}&client_secret={app_secret}'.format(
app_id=APP_ID, # Your app id (found in admin console)
app_secret=APP_SECRET # Your app secret (found in admin console)
)
)
# Parse the token
token = resp.content.split('=')[-1]
# Create the user
data = {'access_token': str(token)}
resp = requests.post(
'https://graph.facebook.com/{app_id}/accounts/test-users?installed=true'.format(
app_id=APP_ID
),
data=data
)
print resp.content