Upload video to facebook using graph api -

i using following code uploading videos users wall:

if( isset($_post['submitvideo']) ) {    $img =  $_files['source']['name'];         $ret_obj = $facebook->api('/me/videos', 'post', array(       'source' => '@' . $img,       'title' => "this test",       'description' => 'test9000',       'privacy' => json_encode(array( 'value' => 'everyone' )),       )    );    echo '<pre>video id: ' . $ret_obj['id'] . '</pre>'; } 

the form looks this:

<form target="uploadtarget" enctype="multipart/form-data" method="post">    <input name="source" type="file">    <input type="submit" value="upload" name="submitvideo" /> </form> 

my problem source of images. correct use this:

$img =  $_files['source']['name']; 

what should source? uploading file local computer.
edited:
if use following pattern same form , use "$post_url" action:

$post_url = "https://graph-video.facebook.com/me/videos?"         . "title=" . $video_title. "&description=" . $video_desc         . "&access_token=". $access_token; 

it works. goes "$post_url" page shows id of uploaded file. how can use id put database?

is correct use this:

$img =  $_files['source']['name']; 

no, http://www.php.net/manual/en/features.file-upload.post-method.php tells you, “the original name of file on client machine.” – of course not want.

you want use name of file gets stored temporarily on server after has been uploaded server client:

$_files['userfile']['tmp_name']

the temporary filename of file in uploaded file stored on server.

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if not work (f.e. temporary directory file uploads might not accessible curl [which php sdk uses internally] directly), have use move_uploaded_file first store file in location on server.