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POAPP on redirect_url shows blank page
 

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  1. POAPP on redirect_url shows blank page
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    <p>I have a Facebook PHP SDK APP in development phase and i'm stuck on something... The logic of the APP is this:</p> <p>first the user have to like the page (app is on this) // works very well :) after that comes the permissions request if permission is granted: the app_data variable is pass through and the user recieves a picture. </p> <p>app_data variable is necessary because, if the user clicks the app after permission granted again, it gets new picture automaticly. with the app_data don't. </p> <p>my problem is this link:</p> <pre><code> $params = array( scope =&gt; 'publish_stream,user_photos', redirect_uri =&gt; 'http://www.facebook.com/XXXXX?sk=app_YYYYYY&amp;app_data=1' ); &lt;a href="&lt;?php echo $facebook-&gt;getLoginUrl($params); ?&gt;"&gt;Accept&lt;/a&gt; </code></pre> <p>If i click on it, the app shows blank page, and nothing happening... :( On direct call, that app runs without any error.</p> <p>Can someone help me out?</p> <p>// sorry for my english...</p> <p>Thank you!</p> <p>and the whole index.php is:</p> <p>this is the whole index.php:</p> <pre><code>&lt;?php require 'facebook.php'; $facebook = new Facebook(array( 'appId' =&gt; 'xxxxx', 'secret' =&gt; 'yyyyy', 'baseUrl' =&gt; 'http://hosting.address/', 'appBaseUrl' =&gt; 'http://apps.facebook.com/app-name/', 'fileUpload' =&gt; 'true', )); // Get User ID $user = $facebook-&gt;getUser(); $params = array( scope =&gt; 'publish_stream,user_photos', redirect_uri =&gt; 'http://www.facebook.com/xxxxx?sk=app_yyyyy&amp;app_data=1' ); $signed_request = $facebook-&gt;getSignedRequest(); $app_data = $signed_request["app_data"]; ?&gt; &lt;!doctype html&gt; &lt;html xmlns:fb="http://www.facebook.com/2008/fbml"&gt; &lt;head&gt; &lt;title&gt;the title&lt;/title&gt; &lt;style&gt; a:link {color:#ffffff;} a:visited {color:#ffffff;} a:hover {color:#ececec;} a:active {color:#1f1f1f;} a:link {text-decoration: none} &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;?php if ($user){ try { $user_profile = $facebook-&gt;api('/me'); $likes = $facebook-&gt;api("/me/likes/123123123"); //page ID if( !empty($likes['data']) ){ $scope = 'publish_stream,user_photos'; $scope_params = explode(',',$scope); $permissions = $facebook-&gt;api("/me/permissions"); if( array_key_exists('publish_stream', $permissions['data'][0]) &amp;&amp; array_key_exists('user_photos', $permissions['data'][0]) &amp;&amp; isset($app_data)) { $file = "1.jpg"; $message = 'bla bla'; $ret_obj = $facebook-&gt;api('/me/photos', 'POST', array( 'source' =&gt; '@' . $file, 'message' =&gt; $message, ) ); echo "&lt;img width=\"520px\" src=\"1.jpg\" /&gt;"; } else { ?&gt; &lt;a href="&lt;?php echo $facebook-&gt;getLoginUrl($params); ?&gt;"&gt;accept&lt;/a&gt;&lt;/td&gt; &lt;a href="http://www.facebook.com/pageurl"&gt;deny&lt;/a&gt;&lt;/td&gt; &lt;? } }else{ echo "&lt;img width=\"520px\" src=\"no-fan.jpg\" /&gt;"; } } catch (FacebookApiException $e) { echo '&lt;pre&gt;'.htmlspecialchars(print_r($e, true)).'&lt;/pre&gt;'; $user = null; } } if ($user) { } else { $loginUrl = $facebook-&gt;getLoginUrl($params); echo '&lt;script type="text/javascript"&gt;top.location.href = "'.$loginUrl .'";&lt;/script&gt;'; } ?&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. COHow ca we tell you why **your** page explodes without showing us a hint of its code?
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    2. COedited: inserted the whole index.php code
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