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POFacebook real-time updates
 

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  1. POFacebook real-time updates
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    <p>I was trying to implement the FB Real-Time Updates. I guess I have managed to subscribe, but don't get any updates... Here is my code:</p> <p><strong>For getting App access token</strong></p> <pre><code>function authAsApp() { $config = array ('appId' =&gt; FB_APPID, 'secret' =&gt; FB_SECRET); $fb = new Facebook($config); Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false; $args = array('grant_type' =&gt; 'client_credentials', 'client_id' =&gt; APP_ID, 'client_secret' =&gt; APP_SECRET); $ch = curl_init(); $url = 'https://graph.facebook.com/oauth/access_token'; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $args); $returnValue = curl_exec($ch); curl_close($ch); $appAccessToken = substr($returnValue, strpos($returnValue,"=")+1); var_dump($appAccessToken); return $appAccessToken; } </code></pre> <p><strong>For subscribtion</strong></p> <pre><code>function subscribeTo($access_token) { $param = array('access_token' =&gt; $access_token, 'object' =&gt; 'user', 'fields' =&gt; 'name, feed, likes', 'callback_url' =&gt; 'http://mysite.com/realTimeVerification.php', 'verify_token' =&gt; VERIF_STR ); $config = array ('appId' =&gt; FB_APPID, 'secret' =&gt; FB_SECRET); $fb = new Facebook($config); Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false; try { $subs = $fb-&gt;api('/'.APP_ID.'/subscriptions', 'POST', $param); var_dump($subs); } catch (\FacebookApiException $e) { echo $e-&gt;getCode()." ".$e-&gt;getType()." ".$e-&gt;getMessage()." ".$e-&gt;getFile()." ".$e-&gt;getLine()."\n"; } } </code></pre> <p><strong>In the callback file named realTimeVerification.php I have</strong></p> <pre><code>&lt;?php define('UPD_FILE', 'updates.log'); $method = $_SERVER['REQUEST_METHOD']; global $log_file; if ($method == 'GET' &amp;&amp; $_GET['hub_mode'] == 'subscribe' &amp;&amp; $_GET['hub_verify_token'] == 'BRComm') { echo $_GET['hub_challenge']; exit; } else if ($method == 'POST') { $log_file=UPD_FILE; $updates = json_decode(file_get_contents("php://input"), true); logToFile("updates =".print_r($updates)); } function logToFile($message){ global $log_file; $hdl = fopen($log_file, 'a') or die ("couldn't open log file"); fwrite($hdl,$message."\n"); fclose($hdl); } ?&gt; </code></pre> <p>After subscription I check it in Graph API Explorer and get:</p> <pre><code>{ "data": [ { "object": "user", "callback_url": "http://mysite.com/realTimeVerification.php", "fields": [ "feed", "name" ], "active": true } ] } </code></pre> <p>So it's subscribed. But when I do changes to my user that has authenticated the App, I don't get any changes in the log. What am I doing wrong?</p>
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    1. COBy the way, I guess the callback is not even executed when there is an update. I added logging at the top of callback, an no results.
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    2. COHave you tried subscribing for the real-time updates through the facebook developers site? It has test functionality which might help point out the problem.
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    3. COactually this issue is resolved a long time ago. SO long that I don't remember what was the problem :)
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