Post directly on user wall HTTP/1.0 400

I make facebook application using facebook guide

When user allow application access than the index page redirect it to tst.php which directly post on user wall

I use the below code in index.php:

index.php

<?php 

require_once 'facebook-php-sdk/src/facebook.php';

$facebook = new Facebook(array(    
     'appId' => 'app_id',  
     'secret' => 'app_secret',  
     'cookie' => true,
)); 

$app_id = app_id;

$canvas_page = 'http://apps.facebook.com/tstsample/tst.php';

$auth_url = "http://www.facebook.com/dialog/oauth?client_id=" .
            $app_id . "&redirect_uri=" . urlencode($canvas_page) . 
            "&scope=email offline_access publish_stream";

$signed_request = $_REQUEST["signed_request"];

list($encoded_sig, $payload) = explode('.', $signed_request, 2);   

$data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true);

if (empty($data["user_id"])) {
     echo("<script> top.location.href='" . $auth_url . "'</script>");
} else {
     echo ("Welcome User: " . $data["user_id"]);
} 

?>

And below is the code which I use in tst.php which use to directly post on user wall:

tst.php

<?php

$feedurl = "https://graph.facebook.com/134875956586326";
$ogurl = "http://www.facebook.com/apps/application.php?id=134875956586326"; 
$app_id = “134875956586326”; 
$app_secret = "app_secret";

$mymessage = urlencode("Hello World!");

$access_token_url = "https://graph.facebook.com/oauth/access_token"; 
$parameters = "type=client_credentials&client_id=" .  
$app_id . "&client_secret=" . $app_secret;
$access_token = file_get_contents($access_token_url . 
                "?" . $parameters);

$apprequest_url = "https://graph.facebook.com/feed";
$parameters = "?" . $access_token . "&message=" . 
              $mymessage . "&id=" . $ogurl . "&method=post";
$myurl = $apprequest_url . $parameters;

$result = file_get_contents($myurl);
echo "post_id" . $result;

?>

And after i run the application two errors occur

1. I see the access allow page than it stops on index page
2. After manually going on the tst.php as I mentioned in the above code, I receive PHP errors

Below are the errors:

Warning: file_get_contents(https://graph.facebook.com/oauth/access_token?type=client_credentials&client_id=�134875956586326�&client_secret=606636c88cd434c5140986d8472fc639) 
             [function.file-get-contents]: failed to open stream: HTTP request failed! 
                 HTTP/1.0 400 Bad Request in /home5/onkhuras/public_html/escribir/tstsample/tst.php
                     on line 14

Warning: file_get_contents(https://graph.facebook.com/feed?&message=Hello+World%21&id=http://www.facebook.com/apps/application.php?id=1348759565开发者_如何学运维86326&method=post) 
             [function.file-get-contents]: failed to open stream: HTTP request failed! 
                 HTTP/1.0 400 Bad Request in /home5/onkhuras/public_html/escribir/tstsample/tst.php
                     on line 21
post_id

How do I resolve these two errors?

Note: I get these two codes from Facebook which I use in index.php and txt.php

---

Check the authentication guide again - https://developers.facebook.com/docs/authentication/.

You need the code returned by /dialog/oauth to get an access_token from https://graph.facebook.com/oauth/access_token

---

I had a similar problem (the second error message) and got it resolved by using my app id for $ogurl like this (the last few lines in your tst.php file):

...
$apprequest_url = "https://graph.facebook.com/feed";
$parameters = "?" . $access_token . "&message=" . 
          $mymessage . "&id=" . $app_id . "&method=post";
$myurl = $apprequest_url . $parameters;
$result = file_get_contents($myurl);
echo "post_id" . $result;
?>

In my case that lead to posting the message to the app wall.