function get_title url if filter_var url FILTER_VALIDATE_URL data file

<?

function get_title ($url) {
  if (filter_var($url, FILTER_VALIDATE_URL)) {
    $data = file_get_contents('http://gmodules.com/ig/proxy?url='.$url);
      preg_match('/\<title\>(.*)\<\/title\>/', $data, $title);
        print (strlen($title[1]) != 0) ? $title[1] : 'ERROR: TITLE_EMPTY';
  }
  else {
    print 'ERROR: URL_INCORRECT';
  }
}

header('Content-type: text/html; charset=utf-8');
get_title('https://www.cloudflare.com/');

?>