facebook: permanent Page Access Token?

Question

I work on a project that has facebook pages as one of its data sources. It imports some data from it periodically with no GUI involved. Then we use a web app to show the dat

Answer 1

Many of these examples do not work, not sure if it's because of 2.9v coming out but I was banging my head. Anyways I took @dw1 version and modified it a little with the help of @KFunk video and got this working for me for 2.9. Hope this helps.

$args=[
/*-- Permanent access token generator for Facebook Graph API version 2.9 --*/
//Instructions: Fill Input Area below and then run this php file
/*-- INPUT AREA START --*/
    'usertoken'=>'',
    'appid'=>'',
    'appsecret'=>'',
    'pageid'=>''
/*-- INPUT AREA END --*/
];
echo 'Permanent access token is: ';
function generate_token($args){
    $r = json_decode(file_get_contents("https://graph.facebook.com/v2.9/oauth/access_token?grant_type=fb_exchange_token&client_id={$args['appid']}&client_secret={$args['appsecret']}&fb_exchange_token={$args['usertoken']}")); // get long-lived token
    $longtoken=$r->access_token;
    $r=json_decode(file_get_contents("https://graph.facebook.com/{$args['pageid']}?fields=access_token&access_token={$longtoken}")); // get user id
    $finaltoken=$r->access_token;
    return $finaltoken;
}