悠悠博客 关注Ajax技术与web开发

 <?php

 function strip_selected_tags($text, $tags = array())

   {

       $args = func_get_args();

       $text = array_shift($args);

       $tags = func_num_args() > 2 ? array_diff($args,array($text))  : (array)$tags;

       foreach ($tags as $tag){

           if(preg_match_all('/<'.$tag.'[^>]*>(.*)<\/'.$tag.'>/iU', $text, $found)){

               $text = str_replace($found[0],$found[1],$text);

         }

       }       return $text;

   }

?>

 <?php

$tags = array();

$tags[0]='a';

$tags[1]='p';

 $str = "<a href=http://www.ajaxstu.com>link</a><p>help</p>";

echo strip_selected_tags($str,$tags);

?>