file_get_contents() and CI 3.0.0

file_get_contents() only retrieves a file as a STRING. It doesn't "parse" or "execute" it. It's up to you what to do with the string. So after you retrieve a "page" using file_get_contents(), what are you trying to do with it? What are the contents of the file?

this is my parse function

PHP Code:

function parse($link)
    {
        $link    = preg_match('/^https?:\/\//i', $link) ? $link : 'http://'.$link;
        $url     = parse_url($link);
        $url     = $url['scheme'].'://'.$url['host'];
        $img_url = $url;

        $link = @file_get_contents($link);

        $dom = new DOMDocument();
        @$dom->loadHTML($link);

        $link = new stdClass;
        $link->url = $url;

        $titles = $dom->getElementsByTagName('title');

        if ($titles)
        {
            $title = $titles->item(0);
        }

        if (isset($title))
        {
            $link->title = $title->nodeValue;
        }

        $meta = $dom->getElementsByTagName('meta');

        if ($meta)
        {
            foreach ($meta as $elem)
            {
                if ($elem->getAttribute('property') == 'og:url')
                {
                    $link->url = $elem->getAttribute('content');
                }

                if ($elem->getAttribute('name') == 'description')
                {
                    $link->description = $elem->getAttribute('content');
                }

                if ($elem->getAttribute('property') == 'og:image')
                {
                    $link->img = $elem->getAttribute('content');
                }
            }
        }

        if ( ! isset($link->img))
        {
            $imgs = $dom->getElementsByTagName('img');

            if ($imgs->length)
            {
                $img = $imgs->item(rand(0, $imgs->length - 1))->getAttribute('src');
            }

            if (isset($img))
            {
                $link->img = preg_match("/http/", $img) ? $img : $img_url.$img;
            }
        }

        return $link;
    } 


this function works for the external pages but for the internal pages if only i am using 2.0, if i am using 3.0, it doesn't work