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Editorial Team
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Asked: 2026-05-28T15:43:49+00:00

Hi Everytime I go directly to the app everything works properly. However when I

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Hi Everytime I go directly to the app everything works properly. However when I click on the tab for the app on the fan page it is blank in firefox and chrome, however in ie it says: This content cannot be displayed in a frame To help protect the security of information you enter into this website, the publisher of this content does not allow it to be displayed in a frame.

What you can try:
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Does anyone know why this is not working? Here’s my php code at the top of my
canvas page. Thanks!

<?php 

$app_id = "181247898619054";
$app_secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
$my_url = "https://apps.facebook.com/wellnessiq/";
session_register();
session_start();
header('P3P: CP="CAO PSA OUR"');

if (!isset($_REQUEST["code"]))
{
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
$dialog_url = "https://www.facebook.com/dialog/oauth?client_id=" 
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&scope=email&state="
. $_SESSION['state'];

echo("<script> top.location.href='" . $dialog_url . "'</script>");
exit;
}
$code = $_REQUEST['code'];
{
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
. "&client_secret=" . $app_secret . "&code=" . $code;

$response = file_get_contents($token_url);
$params = null;
parse_str($response, $params);

$graph_url = "https://graph.facebook.com/me?access_token=" 
. $params['access_token'];

$user = json_decode(file_get_contents($graph_url));
}

?>
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1 Answer

  1. Editorial Team

    I think this might be with how this is set-up. My guess is you have set the link for your fan page application to be the url of your canvas app on facebook.

    e.g https://apps.facebook.com/wellnessiq/

    Then when you click the tab on your page within facebook, it is essentially trying to load facebook in it again with another iFrame holding your app.

    Try changing your page tab url to the full url of your site

    e.g http://www.example.com/canvas.php

    if that’s not the case then trying post a bit more info if you can

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