Помогите с кодом instant

<?php #
class p_link2video extends cmsPlugin {
// ================================================== ================== //
public function __construct(){
parent::__construct();
$this->info['plugin'] = 'p_link2video';
$this->info['title'] = 'Замена Youtube url на видео';
$this->info['description'] = 'Ссылки на Youtube заменяются на код плеера с этим видео';
$this->info['author'] = '';
$this->info['version'] = '0.4';
$this->events[] = 'GET_COMMENTS';
$this->events[] = 'GET_WALL_POSTS';
$this->events[] = 'GET_FORUM_POSTS';
$this->events[] = 'GET_POSTS';
$this->events[] = 'GET_POST';
$this->config['Ширина']="600";
$this->config['Высота']="400";
}
public function install(){ return parent::install(); }
public function upgrade(){ return parent::upgrade(); }
public function execute($event, $item){
parent::execute();
if ($event=='GET_COMMENTS' or $event=='GET_WALL_POSTS') {$content='content';}
else {$content='content_html';}
$play='<br><iframe width="'.$this->config['Ширина'].'" height="'.$this->config['Высота'].'" src="//www.youtube.com/embed/$5" frameborder="0" allowfullscreen></iframe><br>';
if ($event=='GET_POST') {
$item[$content]=preg_replace('!(<a href="\/go\/url=[^>]*>)(http:\/\/|https:\/\/)?(www\.)?(youtube.com\/watch\?v=|youtu.be\/)([-\w]*)(\S*</a>)!i', $play, $item[$content]);
}else{
for ($i=0; $i<count($item);$i++ ){
$item[$i][$content]=preg_replace('!(<a href="\/go\/url=[^>]*>)(http:\/\/|https:\/\/)?(www\.)?(youtube.com\/watch\?v=|youtu.be\/)([-\w]*)(\S*</a>)!i', $play, $item[$i][$content]);
}
}
return $item;
}
}
?>