How to post to a Facebook page with PHP

Question

I would like to post to my own Facebook page\'s wall from my website using PHP.

I have the following:

• Facebook Application with AppID, A

Answer 1

Steps:

1. Request For manage_pages permission ( Allow this process ) :

   https://www.facebook.com/dialog/oauth?client_id=YOUR_APP_ID&redirect_uri=YOUR_URL&scope=manage_pages&response_type=token
   

2. Get Access token from URL :
   If the administrator allows this permission. You should be redirected to URL below:

   http://YOUR_URL/#access_token=AAABY5jBXQz0BAEzNKkb6FZC22D7aOoKIfFuozIjoOpkGHRJ6SyzBvqx24JGooMc31374EdRFNXkOyLZCBzETRD9vhZAZC8MZD&expires_in=0
   

   Use Access token in the URL and you should get this:

   AAABY5jBXQz0BAEzNKkb6FZC22D7aOoKIfFuozIjoOpkGHRJ6SyzBvqx24JGooMc31374EdRFNXkOyLZCBzETRD9vhZAZC8MZD
   

3. Check Access token using Graph API:

   https://graph.facebook.com/me/accounts?access_token=TOKEN_FROM_ABOVE
   

   Connection will return information and access token for each page.

4. Implement it in your code:
   You can use App access token while call a Facebook Graph API method.

Update:
If you want use API method in Facebook SDK, DEPRECATED REST API or FQL Query...

You have to use users_accesstoken this way:

1. Method 1:
   Use your account or users to login to your Facebook page with offline_access permissions and grab access_token while login success using $facebook->getAccessToken(), and save it in database so you can use it anytime.
   You can check the expiration time of the token here, token with offline_access permissions never expire except when the user changes his password or maybe anything else.

2. Method 2:
   You can update your access_token dynamically using the code below (say goodbye to expire token). Facebook shows this solution here, it's a sample code for executing an FQL Query:

Code:

top.location.href='" . $dialog_url . "'");    
}

//get user access_token
$token_url = 'https://graph.facebook.com/oauth/access_token?client_id='
. $app_id . '&redirect_uri=' . urlencode($my_url) 
. '&client_secret=' . $app_secret 
. '&code=' . $code;
$access_token = file_get_contents($token_url);