PHP Class to grab imdb movie info

<?php

class getImdbInfo{

    private $id;
    private $initial_data;

    private $title;
    private $Year;
    private $Released;
    private $Runtime;
    private $Genre;
    private $Director;
    private $Writer;
    private $Actors;
    private $Plot;
    private $Poster;
    private $imdbRating;
    private $imdbVotes;

    function __construct($link){
            if(filter_var($link, FILTER_VALIDATE_URL)){
                preg_match('(/title/(tt\d{5,7})/)u', $link, $matches, PREG_OFFSET_CAPTURE);
                $this->id = $matches[1][0];
            }else{
                throw new Exception('That doesn\'t look like a valid URL.');
            }
    }

    public function getData(){
            $get_movie_info = file_get_contents("http://www.omdbapi.com/?i=".$this->id);
            $this->initial_data = json_decode($get_movie_info);

            $this->title = $this->initial_data->Title;
            $this->Year = $this->initial_data->Year;
            $this->Released = $this->initial_data->Released;
            $this->Runtime = $this->initial_data->Runtime;
            $this->Genre = $this->initial_data->Genre;
            $this->Director = $this->initial_data->Director;
            $this->Writer = $this->initial_data->Writer;
            $this->Actors = $this->initial_data->Actors;
            $this->Plot = $this->initial_data->Plot;
            $this->Poster = $this->initial_data->Poster;
            $this->imdbRating = $this->initial_data->imdbRating;
            $this->imdbVotes = $this->initial_data->imdbVotes;
    }

    public function retArr(){
        $movie_info = array(
            'title' => $this->title,
            'year' => $this->Year,
            'release date' => $this->Released,
            'runtime' => $this->Runtime,
            'genres' => $this->Genre,
            'director' => $this->Director,
            'writer' => $this->Writer,
            'actors' => $this->Actors,
            'plot' => $this->Plot,
            'poster' => $this->Poster,
            'rating' => $this->imdbRating,
            'votes' => $this->imdbVotes
        );
        return $movie_info;
    }

}

//Cum functioneaza?

//Preia link-ul imdb prin constructor si-si i-a ID-ul filmului
try{
    $imdb = new getImdbInfo('http://www.imdb.com/title/tt0114746/?ref_=nv_sr_1');
}catch (Exception $e){
    echo $e->getMessage();
}
//Din id-ul filmului preluat in constructor preia informatiile cu ajutorul http://www.omdbapi.com/
$imdb->getData();

//creeaza un vector cu toate informatiile filmului
$arr = $imdb->retArr();

//parcurgem vectorul si afisam fiecare valoare...
foreach( $arr as $a ){
    echo $a."<br/>";
}