How to embed youtube vidéo dynamically where link store in database

#$data->lien_video is the link vidéo get on DB; example: https://youtu.be/example

#youtube vidéo links are: https://youtu.be/example or https://www.youtube.com/watch?v=9CHSMylQYdw



          $data = "$data->lien_video";  


        $search = "youtu.be";
        if(preg_match("/{$search}/i", $data)) {

            $str_data = substr($data, strpos($data, "e/") + 2);
             } 
            else {                                        
            $str_data = substr($data, strpos($data, "=") + 1);
        }
        // echo $str_data;
        echo "<iframe src='https://www.youtube.com/embed/$str_data'>
        </iframe>"

Great