How to publish feeds to facebook when you have cert error.

When i tried to publish feeds via my php program, I got error which says that “something is wrong, please try again later.CurlException: 60: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed”

Here’s a solution. I found this at comments of Graph API & IFrame Base Facebook Application Development.

Adding two lines below to facebook.php will prevent you from certificate problem.

$opts[CURLOPT_SSL_VERIFYHOST] = 0;
$opts[CURLOPT_SSL_VERIFYPEER] = 0;

Therefore makeRequest of facebook.php will be like below.

protected function makeRequest($url, $params, $ch=null) {
if (!$ch) {
$ch = curl_init();
}

$opts = self::$CURL_OPTS;
$opts[CURLOPT_POSTFIELDS] = $params;
$opts[CURLOPT_URL] = $url;
$opts[CURLOPT_SSL_VERIFYHOST] = 0;
$opts[CURLOPT_SSL_VERIFYPEER] = 0;
curl_setopt_array($ch, $opts);
$result = curl_exec($ch);
if ($result === false) {
$e = new FacebookApiException(array(
‘error_code’ => curl_errno($ch),
‘error’ => array(
‘message’ => curl_error($ch),
‘type’ => ‘CurlException’,
),
));
curl_close($ch);
throw $e;
}
curl_close($ch);
return $result;
}

How to resize your PHP based facebook apps.

I couldn’t find any good solutions to resize facebook apps with PHP SDK.

So I tryed using Javascript to resize. Then…it works!

At first, add reading facebook JS to your html.

<script src=”http://connect.facebook.net/en_US/all.js”></script>

Then add javascript to your html.

<div id=”fb-root”></div>
<script>
window.fbAsyncInit = function() {
FB.init({appId: ‘{{ FB_APPID }}’, status: true, cookie: true,xfbml: true});
FB.Canvas.setAutoResize();
};
(function() {
var e = document.createElement(‘script’);
e.type = ‘text/javascript’;
e.src = document.location.protocol + ‘//connect.facebook.net/en_US/all.js’;
e.async = true;
document.getElementById(‘fb-root’).appendChild(e);
}());
</script>

(*put your appid to {{ FB_APPID }}. I’d wrote PHP program to login onto fb.)

I dont guarantee this works on your apps. But if you have no idea how to resize, it may be good to try. (Don’t forget set your app to IFRAME and Auto-resize)

How to tag your friends with Graph API

I hadn’t known about how to tag your friends with Graph API. Recently, I found an article about it. Then tryed and was sure it works.

Quote from my PHP source is below.

$facebook->setFileUploadSupport(true);
$tags = array(
‘tag_text’ => ‘ak Yip’,
‘tag_uid’ => 642536423,//it’s my id on facebook as a sample
‘x’ => 10,
‘y’ => 10,
);

$args['tags'] = array($tags);
$args['image'] = ‘@’ . realpath($fn);
$data = $facebook->api(‘/me/photos’, ‘post’, $args);

Two important things.

One:Your app need to get permissions like ‘user_photo_video_tags’ and ‘friends_photo_video_tags’.

Two:X,Y is proportion, not coordinate. Don’t put value over 100.