Rotten-Potatoes is a project mainly written in PHP, it's free.
A PHP implementation of the RottenTomatoes API
A quick implementation of the RottenTomatoes developer API.
There has been very little testing, but the focus was to get something off the ground rapidly and go from there.
If you're in a rush, here's how to get started:
<?php
include("rotten_potatoes.php");
$rp = new rotten_potatoes(array("API_KEY" => "your_api_key"));
// contains info about search results
$search = $rp->search("inception");
// get the first result
$movie = $rp->movies[$search->results[0]];
?>
I'll try to work on more documentation soon!