// Strip html and truncate to create a META value.


function seoHTMLtoMETA($str, $type = 'KEYWORDS', $length = 70) {


   require_once 'includes/seo_fns.php';


   $str = preg_replace('/(\[(\S+)\]|&(?![a-zA-Z]{2,6};))/sU', '', $str); // Remove BBCode and chopped off entities


   $str = check_html($str, 'nohtml'); // Remove HTML tags


   $str = preg_replace('/(\s+)/', ' ', $str); // Remove all internal whitepace, replace with single space


   $entities = array('(tm)','"', '©', '>', '<', 


      ' ', '™', '®', ';', 


      chr(10), chr(13), chr(9));


   $str = html_entity_decode(seo_simple_strip_tags($str));


   if ($type == 'DESCRIPTION') $str = str_replace($entities, '', $str);


   $str = htmlspecialchars($str);


   // Remove stop words from keyword content, then convert to most popular keywords


   if ($type == 'KEYWORDS' and $str > '') $str = seoGetAutoKeys($str);


   $metavalue = truncate_string($str, $length);


   if (mb_strlen($str) > mb_strlen($metavalue)) $metavalue .= "...";


   return $metavalue;


}