auto share links using php curl - php

Question

I want to auto share links in my facebook wall using this script :
$attachment = array(
'email' => 'mail',
'password' => 'password',
'access_token' => 'my token',
'message' => "my message",
'name' => 'name',
'link' => 'my_url',
'description' => "my description"
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://graph.facebook.com/me/links');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT,5);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.001 (windows; U; NT4.0; en-US; rv:1.0) Gecko/25250101');
curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
$json = json_decode($result);
$post_id = $json->{'id'};
curl_close($ch);
at the began it worked for me but after trying it for 7 times or more i got this error :
{ "error": { "message": "(#100) The parameter url is required", "type": "OAuthException", "code": 100 } }
how can I fix it

Answer 1

links
Create
You can post a link on the user's behalf by issuing an HTTP POST request to PROFILE_ID/feed with the publish_stream permissions.
The other fields are taken from the metadata of the page URL given in the 'link' param.
If the create is successful, you get the following return.
Refer to: https://developers.facebook.com/docs/reference/api/user/#links
curl_setopt($ch, CURLOPT_URL, 'https://graph.facebook.com/me/feed');