PHP giving unclear error

[NSA]

Hey there.

I'm creating a script which scans the page of a given URL (like a web crawler).
Now, for some reason, I'm getting the error: Class 'simple_html_dom' not found in /class/class.shorten.php on line 50.
Now, line 50 is as follows: "{".
Yep. That's literally all that's on line 50.
I've scanned the entire file and I'm not even creating a new simple_html_dom anywhere... I'm not even using anything containing that class.
If anyone can tell me what on earth is going on, I would be greatly appreciative.

Here's a snippet of my code, 9 lines from line 50.

                if(strpos($url, "http://") !== false)
                {
                    $url = explode("//", $url);
                    $url = $url[1];
                }
                $url = "http://" . $url;
                $file = file_get_contents($url);

                if(preg_match("/<title>(.+)<\/title>/i",$file,$result))
                {
                $title = $result[1];
                }
                else
                {
                $title = "No title.";
                }
                $short_name = $this->randomShort();
                if($url = $this->con->real_escape_string(strip_tags(htmlspecialchars($url))))
                {
                    $q = "INSERT INTO shortened (short_name, full_url, owner) VALUES (?, ?, ?)";

 

[NSA]

Literally no idea why it was playing up.
After DrPepper23 posted his reply, I went over to the file to print the results and there was no longer any error...
Perhaps something was being cached idfk.

Issue resolved. Please close thread.