Use a simple PHP SDK to create functions

Background: [login to view URL] is a service that allows you to upload videos from the API. They receive videos, will convert them, host them, and provide a video player for them. They'll charge money for that. So they have created a PHP SDK for that in order for you to learn "[login to view URL]". I have done a lot of work myself already; including the API authentication. For example, this will print the ID's of all videos stored in my dmcloud account along with the title (known as metadata) : <?php # Authentication, you don't have to deal with this I've already did it: require_once '[login to view URL]'; require_once '[login to view URL]'; $cloudkey = new CloudKey($user_id, $api_key); # List some video and display the media_id and title: $page = 1; while(1) { $res = $cloudkey->media->list(array('fields' => array('id', '[login to view URL]'), 'page' => $page++)); foreach($res->list as $media) { printf("%s %s\n", $media->id, $media->meta->title); } if ($res->page == $res->pages) { break; } } Now here is the difficult part where you have do to the work, this link [login to view URL] shows you how to use their methods. What I want: create php functions that: 1) Deletes a video from my dmcloud account. The function will receive the ID the video in the function (provided by the user) and it will delete the video from account. 2) Retrieve the metadata (title, author, description, etc...) of a video from my dmcloud account. The function will receive the ID the video in the function (provided by the user) and it will retrieve the video info from account. [90% done in the example] 3) Edit the metadata (title, author, description, etc...) of a video from my dmcloud account. The function will receive the ID the video in the function along with the new metadata (provided by the user) and it will edit the metadata video info from account. 4) Retrieve all videos corresponding to a specific metadata. For example, the function will receive input that: ('author' "Adam Log"), it will respectively retrieve all the videos by author "Adam Log". You work on your server or mine, php.