php - how to separate selected tags from html content

I have an html like

 
   
Dr. Maria Steffens
   
Institute of Medico
   

   

   
Sta. Ana, strt PH-501
   
1062 Caracas
   
France

  
   
Telefon: +58-457-2889567
   
plasticsurgery@yahoo.com
   
www.mysite.com

Now i want to separate every tag like

Dr. Maria Steffens

or occurrence of

 tag

I have tried

$html = new DOMDocument();

@$html->loadHtmlFile('http://www.sitetofetch.com');
$xpath = new DOMXPath( $html );
$nodelist = $xpath->query( "//*[@class='address']" );

foreach ($nodelist as $n){
  $newhtml = $html->saveHtml($n)."\n";
  $newhtml = htmlentities($newhtml);

$items = $html->getElementsByTagName('h1');
}

but its not working properly,

How can i do that.