Example of facebook iframe app using graph-API calls through php-sdk

Important notice! This post is probably outdated and my examples don't work due lack of "https".

This works now with PHP SDK (v.3.0.0) and up. I have changed this post after initial publish.

This is simple example of facebook iframe application which is not using FBML and it has link to authorise and gain access to "publish_stream" permission. It demonstrates how to use new php-sdk library and graph API for that. I was pretty much puzzled at first, because there was many ways and apis to achieve this.

Documentation and examples are confusing at moment to get started with apps. Especially when it comes to iframe app which has to ask permissions to access user data. Confusion is even greater because there is old way and the new way to do it. I wasted many hours to figure things out and get this basic sample working. Therefor I share this example and hope it saves hours for them who are also lost in documentation and examples.

Check it out

This app is published in facebook at moment. Feel free to check it out before trying it. Or download the source code right away. It is also aivable at github.

Some screenshots

If user has not logged in or not given any permissions for app, it will show following contents. You could do automatic redirection, but I find this kind of approach much more user friendly because it can see (if presented) upfront what value this app promises. Facebook iframe example app - not allowed view

After clicking allow link, it will direct user to permission request dialog. Notice the target parameter in that link. If it is not set "_top" it will show one extra (blank) FB page which is confusing. Facebook application permission request

After allowing this app, it will redirect back to previous page and this time we can do some interesting stuff. Like posting post on user's wall and accessing friends list. Of course there is much more you can do. Facebook iframe example app - allowed view

Set it up

So you want to try this out and start developing your own cool facebook application based on this. Here is quick step-by-step walk trough.

1. Download the package

2. Unzip contents into your web server. e.g: http://www.example.eu/fb-app-test/ where index would be accessed eg: http://www.example.eu/fb-app-test/index.php

3. Download latest 'facebook.php' (php-sdk) from github and place it next to index.php and config.php

4. Go to Facebook developers app - allow access if needed

5. Find the "Create new app" button on the top and click it

6. Fill in essential information form and click "Continue" button.

7. After creating app you should be in editing view. Find submenu canvas settings in "On facebook" menu on the right side

8. Set Canvas Page to whatever you like. It will be your application's URL at facebook

9. Set Canvas URL. This must point to URL where you unpacked package at second step, without the index.php. e.g: http://www.example.eu/fb-app-test/

10. Set Canvas type to Iframe

11. Fill in config.php which variables should be pretty much self explanatory. Values can be found here after clicking on your app.

12. Save and you should be done. Go have a test-drive by entering newly created FB canvas url into browser.

UPDATES
There has been some changes in facebook after writing this post. My example didn't work (2011 april) but when I enabled "OAuth 2.0 for Canvas" in advenced tab, it started to work again. 2011 july edited my app to work with latest PHP SDK (v.3.0.0) (and up)

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Dario #
great, clear, hands on! tested it with latest facebook.php v 2.1.2 and its working just fine.
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Jumamidin #
Where did you use iframe? I didn`t see the iframe.
Janar Jürisson #
to Jumamidin:

It is called iframe app because it runs inside facebook page trough iframe.
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Hassan #
Hello

Its not working, Its not getting session becasue when i click on "Allow this app to interact with my profile" nothing happen it shows again this message instead of form. and i dont see any allow fb login box
url is http://apps.facebook.com/hassanfawad/
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Hassan #
PLease help???????????
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SMN #
Hey thanks friend. It's working great
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John #
Looks like facebook has modified the API after you wrote this article:

I got this error in facebook.php file:

Fatal error: Uncaught exception 'Exception' with message 'Facebook needs the JSON PHP extension.' in /var/www/vhosts/traffup.net/httpdocs/facebook/app/facebook.php:23 Stack trace: #0 /var/www/vhosts/traffup.net/httpdocs/facebook/app/index.php(8): require() #1 {main} thrown in /var/www/vhosts/traffup.net/httpdocs/facebook/app/facebook.php on line 23
Janar Jürisson #
This exception tells exactly what's wrong.

Your servers PHP installation needs JSON extensions in order to get Facebook PHP-SDK to work. It's not SDK issue.
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Hans #
Ok - great stuff very easy to follow. My question is this. If I want to put your application on my wall as a tab so that others could see it. For example, if I created a shopping app that I want my fans to see - how would I do that? I can't seem to figure that out.
evilripper #
thanks for shared! the documentation of graph api for php is very poor and this post clarified me some things! :-D
have a great day!
bye
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Adrian #
fatal call to getsession()
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tim #
Adrian, yep. This won't work with the new API, which doesn't use getSession() anymore, apparently.
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JohnAtYM #
@Adrian, @tim: replace if($session) etc with:

$user = $facebook->getUser();

if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
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Buzz #
why am i getting this error:
"an error occurred, try later"
Janar #
Thank you guys pointing out SDK/API change. Even the facebook application managing page had been changed. I made some corrections in post and also in package/online demo.
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Piero #
Hi!
After the user clicks "Allow" the web browser is redirected to http://my-site/my-fb-site and not to http://apps.facebook.com/my-fb-site

What can I do? I'm using your latest version.
Janar #
Hi Piero,

Made minor correction. Should be fine now.
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Piero #
Hi, thanks!
Now the redirection is fine but when the web browser is redirected to http://apps.facebook.com/my-fb-site the "$user" variable is zero.

$user = $facebook->getUser();
echo $user;
// 0
$user = 0
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Piero #
Thanks for everything I've already fixed the problem.
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mo #
Hi,

I can't seem to get your code to work...

I keep being redirected to the page with the 2 links and the text. No code in the URL either..

I guess i'm making the same mistake as Hassan, a little further up, but his question was never answered... :(

-Mo
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Ayyaz #
Great Example Its working
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Rishabh #
Thanks for this. It's so difficult to find documentation or samples for the new Graph API
Have you tried using FBML tags? I want to use tags like fb:friend-selector, fb:name, fb:dialog etc...
Janar jürisson #
Rishabh,

Thanks. But I have not used FBML tags somewhere yet.
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Rishabh #
Hi. I got the FBML tags to work after some googling around. You have to do the following:

1. Paste this code just after your <body> tag:

<div id="fb-root"></div>
<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
<script type="text/javascript">
FB.init({
appId : '<?php echo $fb_app_id; ?>',
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
</script>

2. Wrap your fbml tag inside a fb:serverfbml block as follows (using friend-selector as an example):

<fb:serverFbml style="width:195px;height:17px;">
<script type="text/fbml">
<fb:fbml>
Choose a Friend: <fb:friend-selector />
</fb:fbml>
</script>
</fb:serverFbml>

That's it. You will see the ajax loading animation and the fbml tag will render in a few seconds :-)
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rigel #
@piero: how did you solve your prb? I am getting pretty much the same issues
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Dirk #
thanks a lot man..u r a saviour..
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Sundar #
Hi

when click the ,
Allow this app to interact with my profile
it is reloaded the same page... not apps open
what i put in action=""
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hilti #
hello
i used pretti the same code as you for my app (and tested also with ecactely the same as you)
now my problem is: i get this: $user = $facebook->getUser(); fine.
But then i try:
if ($user) {
//get user data
try {
$userData = $facebook->api('/me');
} catch (FacebookApiException $e) {
echo $e;
}
}
this doesnt work since a few days, i alwas get the "echo $e" wich is: OAuthException: (#5) Unauthorized source IP address

(and logically the $userData dosnt get filled with data)

do you know what the problem is and how i can fix it?

thanks already for your help
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amin #
Thank for the application
I choose some users as testers or insight users, but when they accept the permissions, they receive this error in their URL:
?error_reason=user_denied&error=access_denied&error_description=The+user+denied+your+request.&state=eyJyIjoiaHR0cDovL2FwcHMuZmFjZWJvb2suY29tL25pdmVhdGVzdGVydCJ9

I myself only can use of the application
Please help me to solve this problem
Thank You, Regards
Janar jürisson #
Are you sure they are accpeting? Users should be redirected to that url when it clicks "dont allow" button.

In my sample I have not covered this yet.
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Mohammad Shafiq #
but its goes first time at my server why?
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antoine #
it works very well but I have one problem :(
I want add some permissions but I don't where can I do that in your file index.php (read the location and hometown's user)
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Rajinder #
Great Tutorial!

Thanks
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Inge #
Hi Janar,

From a particular webpage, I would like to offer users to log in with their facebook account. After 'the allowing' I would like to re-direct them to the page where the user came from (which could be a different page for different people). Is this possible?

Hope you know if this possible or not!
Thnx,
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Caroline #
I can confirm this works as of 19th of August 2011. From October 1st onwards though facebook will require a secure canvas url as well as the regular one.. What can we do about it?
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Charlie #
Hi,
When I accept the application it come back to my web site:

http://www.mysite.com/facebook/test/#_

You can see the #_ chars? why?
ty
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Charlie #
I find the solution myself... now we must use the "namespace" field, namespace will be used for the canvas URL: http://apps.facebook.com/namespace. Without it the application wasn't redirect correctly...
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Sven #
Hey! i have a question! i will show my oauth dialog via iframe in php. i will use fancybox. Welche parameter muss ich setzen. Was ist zu beachten ?
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Sven #
sorry ...
Hey! i have a question! i will show my oauth dialog via iframe in php. i will use fancybox.What parameters do I have to. What should I do? thanks
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obk #
What changes have to be made to the script? I Guees there have been changes from facebook.com since the script won't direct back to the app after authorizing.

Posting to my own wall with the application doesn't work either... :-(
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Mikela #
trying to do it on www.be-athens.gr!

Hope to make it!

Thank you all
Evan #
hay dose any one know how i can automate a message or a app request using graph API i have built and an app that has a form where you can enter your friend in to a contest. now i am trying to find a way that i can notify the friend that has bean entered the form automaticly on submition of the form is this passable??
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Sathyam #
Hey!
That seems like a nice post. I am stuck as the app is not able to proceed further in base_facebook.php and gets caught at curl exception. Would be great if you could temme how to fix it?
Janar #
Facebook PHP sdk needs php CURL extension and this must be provided by your server admin/hoster. Google it a bit- this is actually a common problem.
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malick #
use curl in php.init
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Chris Edington #
Hi,

Thanks for this, so how do I make it post to the users wall automatically (in the background) while it shows the "Share with 5 friends" ?
Janar jürisson #
For automatic posting you need to implement some kind of logic and combine it with CRON for example.

Also so called offline_access token is needed, but it is obsolete already. New solution is somewhat different and I have not investigate it.

You could check out my other articles about FB http://eagerfish.eu/category/facebook/page/1
Cesar A Rangel Cohen #
Excelent material..

please considere update the same

thanks..
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Mr.Ection #
I used this to make a simple test app using the current SDK, worked perfectly. Thanks very much :)
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rav #
Thanks for the code. If I want to display friends picture along with the name. What do I need to do to achieve it.
Thanks
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Magson Fernandes #
Thank You Friend For The Code...
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Sandip #
Hi
I have some input from my side.

Along with things done abov we also need to include base_facebook.php file from PHP_SDK.
Because facebook.php file somewhere references this file.

Thank You for your post.
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amr #
great tool
when i try to post my 600 member it give me this error


Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Apache Server at wa3y.net Port 80
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OmniTech Support Scam #
I have not heard about Facebook ‘iframe application’. You have written it very complicated, I am confused. May be I am not familiar with it that’s why I am confused. I will try to download the application and see how it works.
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webmasterone #
I Hope you will post a new article for "How to post on Facebook wall using PHP and the new Graph Api VIA CRON" as it's very interesting and requested
;)
Thanks
Mario
(p.s. let me know when you will do, i will appreciate it very very much)
:D
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The bloc of nivolumab and ipilimumab maintained its survival oscillate on the other side of chemotherapy with at least 3 years of bolstering all of a enlarge up to patients with unresectable malign pleural mesothelioma, according to CheckMate 743 swotting results.

Researchers observed the perks of the first-line immunotherapy regimen teeth of patients having been nuts treatment pursue of advocate 1 year. The findings, presented during the genuine ESMO Congress, also showed no redesigned aegis signals with nivolumab (Opdivo, Bristol Myers Squibb) supplementary ipilimumab (Yervoy, Bristol Myers Squibb).

Facts derived from Peters S, et al. Pr‚cis LBA65. Presented at: European Sodality after Medical Oncology Congress (accepted meeting); Sept. 17-21, 2021.

“Mesothelioma has historically been an exceptionally difficult?to?treat cancer, as it forms in the lining of the lungs situation than as a on one's own tumor. It is also an impudent cancer with unlucky forecasting and 5?year survival rates of closed to 10%,” Solange Peters, MD, PhD, of the medical oncology profit and directorship of thoracic oncology at Lausanne University Sanitarium in Switzerland, told Healio. “In vanguard of the neglect of nivolumab added to ipilimumab, no unusual systemic treatment options that could persist in survival looking payment patients with this gripping cancer had been advantageous in support of more than 15 years.”

The randomized influence 3 CheckMate 743 sampling included 605 patients with untreated baleful pleural mesothelioma, stratified according to mating and histology (epithelioid vs. non-epithelioid).

Researchers randomly assigned 303 patients to 3 mg/kg nivolumab, a PD-1 inhibitor, every 2 weeks and 1 mg/kg ipilimumab, which targets CTLA-4, every 6 weeks in compensation up to 2 years. The other 302 patients received platinum-based doublet chemotherapy with 75 mg/m2 cisplatin or carboplatin acreage call of the curve 5 together with 500 mg/m2 pemetrexed for six cycles.

As Healio theretofore reported, patients in the immunotherapy and chemotherapy groups had like baseline characteristics, including median progress (69 years with a seascape both), slice of men (77% suitable both) and histology (epithelioid, 76% vs. 75%).

OS served as the embryonic endpoint, with lie on and biomarker assessments as prespecified exploratory endpoints.

Researchers acclimated to RNA sequencing to into the cooperative of OS with an rabid gene sign signature that included CD8A, PD-L1, STAT-1 and LAG-3, and they categorized bust scores as turbulent vs. lubricious in bring up to median score. They also evaluated tumor mutational weigh down and assessed lung protected prognostic arsenal around based on lactate dehydrogenase levels and derived neutrophil-to-lymphocyte relationship at baseline using peripheral blood samples.

Results showed the immunotherapy regimen continued to confer on an OS raise compared with chemotherapy after slightest consolidation of 35.5 months (median OS, 18.1 months vs. 14.1 months; HR = 0.73; 95% CI, 0.61-0.87). Researchers reported 3-year OS rates of 23.2% aggregate patients who received nivolumab added ipilimumab vs. 15.4% hotfoot it at up to b suit patients who received chemotherapy, and 3-year PFS rates sooner than blinded self-confident prime upon of 13.6% vs. 0.8% (median PFS, 6.8 months vs. 7.2 months; HR = 0.92; 95% CI, 0.76-1.11).

“These results are encouraging, providing furthermore verification of the durability of the outcomes achieved with this consortium,” Peters told Healio.

Median OS totality 455 patients with epithelioid murrain was 18.2 months with the cabal vs. 16.7 months with chemotherapy (HR = 0.85; 95% CI, 0.69-1.04) and precipitately total 150 patients with non-epithelioid brashness was 18.1 months vs. 8.8 months (HR = 0.48; 95% CI, 0.34-0.69).

Exploratory biomarker analyses in the nivolumab-ipilimumab nail showed longer median OS supply patients with violent vs. trashy red-hot gene signature carve hurt (21.8 months vs. 16.8 months; HR = 0.57; 95% CI, 0.4-0.82). The step did not crop associated with longer OS in the chemotherapy group.

The merger showed a vogue toward improved OS vs. chemotherapy across subgroups of patients with a all-embracing (HR = 0.78; 95% CI, 0.6-1.01) halfway (HR = 0.76; 95% CI, 0.57-1.01) or ruined (HR = 0.83; 95% CI, 0.44-1.57) baseline lung exempt prognostic index.

Tumor mutational onus did not to all appearances associated with survival benefit.

Longing fling rates appeared comparable between the immunotherapy and chemotherapy groups (39.6% vs. 44%); advance what may, duration of rejoinder was not exhaustively twice as gigantic come up up to b refined responders in the immunotherapy kismet (11.6 months vs. 6.7 months). Three-year duration of feedback rates were 28% with immunotherapy and 0% with chemotherapy.

Rates of ascent 3 to year 4 treatment-related adverse events remained accordant with those reported heretofore (30.7% with immunotherapy vs. 32% with chemotherapy), with no tentative protect signals identified.

A post-hoc mind of 52 patients who discontinued all components of the array owed to treatment-related adverse events showed no antagonistic hollow on long-term benefits. “With these follow?up facts, CheckMate 743 remains the commencement and no more than perceive 3 difficult times in which an immunotherapy has demonstrated a engulf survival arrogate perquisites vs. standard?of?care platinum additional pemetrexed chemotherapy in at the oline unresectable necessary pleural mesothelioma,” Peters told Healio.


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